Everyone's talking about not being selfish and just giving yourselves over to your kids... It's in the kids best interest to have sane, functioning parents. For some ppl, they would be better off giving proper attention to a smaller number of children than popping them out by the dozens.
2 separate issues.
1. People having too many kids they can't take care of properly (whether financially, physically, emotionally) .
2. Raising children is hard.
Many aren't as prepared as they could be for what it entails. And even though it may seem like everyone else is doing it just fine, no problems, that isn't true.
It's hard. Just a fact. Not a bad one. Just a truth.