There is a strange economic fact hiding in plain sight: the richer a country becomes, the fewer children its families tend to have.
The European Union’s fertility rate fell to 1.34 children per woman in 2024, according to Eurostat. The replacement rate: the level needed to keep a population stable without immigration: is roughly 2.1.
The United States is doing better than Europe, but not well enough to change the basic story. American fertility is roughly 1.6 to 1.7 children per woman, also below replacement.
This is not simply a cultural story, although culture matters. It is an economics story. The cost of having a child has risen, the financial benefits have disappeared, housing has become punishingly expensive, and the value of time has increased. The modern economy has made people wealthier while making family formation harder.
That is the prosperity paradox.
When children were economic assets
For most of human history, children were not only loved members of the family. They were also economic contributors.
On a farm, children helped with planting, harvesting, feeding animals, and household work. In a family business, they became unpaid labor and eventually took over the operation. In old age, parents often depended directly on their children for care and financial support.
The family was a production unit.
That arrangement was not necessarily comfortable or fair. Children worked early, education was limited, and life expectancy was much lower. But the economic calculation was different. The cost of raising a child was real, while the child also produced value for the household.
Modern prosperity flipped the equation.
Today, children generally do not add to household income. They require childcare, medical care, clothing, food, transportation, tutoring, technology, and years of education. Parents are expected to provide not merely a safe home, but the correct neighborhood, the right schools, enriching activities, suitable nutrition, and perhaps a college fund.
The child went from being a potential economic asset to what economists call a long-term consumption cost.
That does not mean children are a bad investment. It means the financial return is no longer paid to the household. The benefits: future workers, taxpayers, consumers, and caregivers: are spread across society. The parents receive the joy and responsibility. The government eventually receives the tax revenue. Employers receive the workers.
The bill arrives at the kitchen table first.
The price of time went up
The second part of the story is the rising opportunity cost of childbearing.
That phrase sounds like something invented to make a dinner conversation unbearable, but the idea is simple: choosing one thing means giving up another.
When women’s education and labor-force participation increased, the potential income and career cost of taking time away from work also increased. A year away from the labor market can mean lost wages, a missed promotion, weaker professional networks, or a slower path toward financial independence.
This does not mean women caused the fertility decline. It means the modern economy created more valuable alternatives to full-time childrearing while failing to make the combination of work and family easy.
The standard economic model once predicted that more women working would automatically mean fewer children. The actual evidence is more complicated. Across wealthy countries, places with strong childcare systems, flexible employment, paid leave, and a more equal division of household work often have higher fertility than places where women are expected to work and still carry most of the family burden.
The important distinction is not simply women working versus women staying home.
It is whether a society makes it possible to work and raise children without turning every weekday into a logistical hostage situation.
A country can be prosperous on paper and still make the ordinary family feel like it is attempting a hostile corporate merger.
Housing is the gatekeeper
Before most couples debate whether to have a second or third child, they have to answer a simpler question:
Where would everyone sleep?
Housing costs have become one of the clearest economic barriers to family formation. Young adults in many prosperous cities face high rents, large down payments, expensive mortgages, and a shortage of homes with enough bedrooms for a growing family.
A couple may technically be able to afford one child in a small apartment. Two children can require a move. That move may mean a longer commute, a different school district, higher transportation costs, or leaving the city where the parents built their careers.
Housing is not just another line item in the family budget. It determines whether a family can form at all.
The OECD’s research on fertility and family policy points to housing affordability, job insecurity, childcare costs, and the difficulty of balancing employment with family life as important factors behind low fertility.
This is why broad statements about “young people not wanting families” miss the kitchen-table reality. Some young people may not want children. Others want children but cannot make the numbers work. A delayed first child can easily become a smaller family, because biology does not always cooperate with the calendar.
Prosperity changes what people want
There is also a social shift underway.
In poorer societies, family is often the central institution. It provides work, identity, housing, childcare, old-age support, and social status. In wealthier societies, those functions are increasingly handled by markets, governments, schools, retirement accounts, and professional services.
People are freer to organize their lives around personal interests, travel, education, careers, hobbies, and individual fulfillment.
That freedom is valuable. It is also economically significant.
When family obligation becomes less central, the pressure to marry and have children declines. The decision becomes more private and more deliberate. A child is no longer simply the next step in adulthood. It becomes one large project competing with many other possible lives.
The result is not necessarily selfishness. It is choice operating inside a high-cost environment.
People are making individual decisions that often make perfect sense. The problem is that millions of rational household decisions can produce a national outcome nobody intended.
The brutal demographic math
A fertility rate of 1.34 does not mean Europe loses population immediately. People live longer, and immigration can offset some of the decline. But the age structure changes over time.
Think of the population as a chain of household generations. If each generation is substantially smaller than the one before it, the country eventually has fewer workers, fewer taxpayers, and fewer customers.
A pay-as-you-go pension system makes the problem especially clear. Current workers help finance current retirees. If there are three or four workers supporting each retiree, the burden is manageable. If there are two workers, or fewer, each worker has to carry more of the load.
The OECD projects that the number of people aged 65 and older per 100 working-age people across OECD countries could rise from about 30 in 2020 to 59 in 2060.
That is not a minor demographic adjustment. It is a restructuring of the economic balance sheet.
Below-replacement fertility eventually means:
- Fewer people entering the workforce.
- Fewer taxpayers supporting pensions and healthcare.
- Fewer first-time homebuyers.
- Weaker demand for starter homes, diapers, school supplies, and family vehicles.
- More pressure to raise taxes or reduce benefits.
- A smaller customer base for businesses built around younger households.
The economy does not stop because fewer babies are born. It gets older, slower, and more expensive to maintain.
Why Europe grows more slowly than America
Demographics are not the only reason Europe’s economy grows more slowly than America’s. Productivity, regulation, energy prices, capital markets, technology companies, and fiscal policy all matter.
But demography is part of the structure.
Economic growth generally comes from more workers, more hours, better skills, and higher productivity. When the working-age population shrinks, a country must compensate through productivity gains, higher labor-force participation, later retirement, automation, or immigration.
The United States has more favorable demographics than many European countries, but the advantage is narrowing. With American fertility also around 1.6 to 1.7, the United States is moving in the same general direction.
Immigration can help. New workers can fill jobs, pay taxes, start businesses, and support demand. But importing workers is not the same as rebuilding a young population. A worker who arrives at age 30 may help the labor market immediately, but that person also ages. The fiscal benefit depends on wages, family size, education, housing costs, public services, and whether the labor market can absorb new arrivals.
Immigration can be a useful economic tool. It is not a time machine.
That is why the fertility issue cannot be permanently solved by treating migration as a replacement for family formation. The patch may delay the bill, but it does not eliminate the underlying arithmetic.
Can prosperity be redesigned?
The uncomfortable question is whether the very things people chase: higher incomes, better education, individual freedom, and economic growth: also reduce the number of children people have.
The honest answer is that prosperity does appear to push fertility lower. But prosperity does not have to make family life impossible.
Housing can be more affordable. Childcare can be treated as economic infrastructure rather than a private luxury. Work schedules can become less hostile to family life. Paid leave can preserve labor-market attachment. Men can carry more of the household workload. Cities can build homes where young families can actually live.
None of this guarantees a return to replacement fertility. Government cannot manufacture family desire with a tax credit. But policy can determine whether a couple who wants children can afford to have them.
That is the central economic distinction.
The goal is not to lecture people into having larger families. It is to stop building a society where the practical cost of family formation is so high that people quietly give up on it.
Europe’s low birthrate is not just a sign of cultural decline, and America’s is not just a lifestyle trend. It is the result of millions of household balance sheets, housing decisions, career tradeoffs, and private calculations.
The future is being decided in those calculations; one rent payment, one childcare bill, and one postponed family at a time.
For more kitchen-table economics, visit the Regular Guy Economics podcast.
Disclosure: This article is for informational and educational purposes only. Regular Guy Economics is not a financial advisor, and this content is not investment advice.
Be mindful, be watchful and good luck.