Human experimentation, one way or the other.

https://lemmy.world/post/44414566

Sadly, the stupid tend to breed prolifically, and anti-vax idiots often have a gaggle of spawn, and are keen to whelp more litters as the others die from perfectly preventable diseases

Of course they have many kids. They need to in order to survive their genes.

Many of their kids never reach adulthood.

In 1st world countries I don’t think that’s true at all…to the point where I’ll say you’re flat out wrong. At least for many, many years that hasn’t been the case.

Can’t comment about less fortunate countries though.