That's fair but there are vast number of people for whom having kids is an immense drain on their life. I am not just talking about the folks who fall into this category that visit HN (well off professionals who decide to forego kids for lifestyle reasons), I am also talking about those with financial issues whose life might objectively be better if they only had one kid as opposed to 3.

It's as if survival depends on a species being prevented from reaching a point of average intelligence where a single errant outlier with a malicious streak can destroy the whole. When everyone has the ability to build a doomsday device, someone will. Hence the vast, fecund universe for the taking scored by the inexplicable, seemingly eldritch, fermian silence.