Comment by hollerith

>most people in the developed world today aren’t doing it.

Untrue: e.g., in the US, "Among women and men aged 40–49 in 2015–2019, 84.3% of women had given birth and 76.5% of men had fathered a child."

https://www.cdc.gov/nchs/data/nhsr/nhsr179.pdf