Definitely a bit hypocritical of me, since I'm also a part of the problem who doesn't want to have kids. But, at least for me, it's not worth it right at this time.
Interesting. In USA fertility is tub / U shaped [0]. Filthy rich just hire nannies and bang away and dirt poor have none to negative opportunity cost
[0] https://twitter.com/theHauer/status/1222514313723875332/phot...
Even by just looking at my surroundings, I have some friends who make decent money, and they're still on "no kids" train, even though hiring 24/7 help would just cost them pennies.
Near equal (higher) fertility at both extremes might be, but not proof of, the hypothesis the dirt poor and filthy rich are the fertility rate you get when opportunity cost looks near 0.
A bucket you often see stopping at 300+k imo far too low as the lower band of that is usually high stress highly educated long hours professional and small biz owners who have insane opportunity cost to have children.
Sure, if your goal is to have as many kids as possible, that's a different topic. But that's statistically insignificant amount of people as of now.
But agreed, there are costs that might not be offset by the rewards. Nevertheless the statistics remain filthy rich and dirt poor are acting as mirrors on the curve.