Yes. When you don't have kids you can always quit the game/rat race one way or another if it gets too much. With kids - it is different. Kids are the only burden you can't easily shrug off in this life.
So you’ve never seen parents quit and neglect their kids ? That does not exists ?
I assume you grew up in different circles than me. I have seen countless kids shrugged off growing up poor and around drug addiction. I have heard the rich shrug them off to boarding school sometimes.