Why are so many Americans choosing to not have children?

Sen. JD Vance, the Republican vice presidential nominee, and his wife, Usha Vance, during a rally Saturday in St. Cloud, Minn. Vance recently came under fire for saying in 2021 that the nation was run by “childless cat ladies” who “hate normal Americans for choosing family over these ridiculous D.C. and New York status games.” (Doug Mills/The New York Times)

A child swings at the Creekside Park playground in 2022 in Dana Point, Calif. Researchers say that societal factors like rising child care costs, unaffordable housing and slipping optimism about the future have made it harder to raise children in the United States. (Alisha Jucevic/The New York Times)

For years, some conservatives have framed the declining fertility rate of the United States as an example of eroding family values, a moral catastrophe in slow motion.