https://www.vox.com/today-explained-podcast/405376/pronatalism-fertility-couples-romance-alice-evans
"Fertility data used to be a fairly esoteric concern. Not anymore. Vice President JD Vance talks about it regularly, Elon Musk calls it civilization's greatest threat. There's even a convention for "pronatalists," Natalcon...
, in America, for example, over half of 18- to 34-year-olds are neither in a steady relationship nor living with a partner. Furthermore, most single Americans don't feel much pressure to find a partner. Half say they're not even looking..."