I was going to edit my original comment but this might make more sense in response to your comment:

Part of me does wish my kids would have kids. Grandkids would be a bonus, but the main reason is I think it would make them better and happier people long-term and of course I want my kids to be better and happier.

Maybe that's what your parents are thinking too?

It sounds like you don't have a very high opinion of them, so maybe not. You know them better than I do.

OK my answer so far has been pretty wishy-washy: "parenthood is great, but there are too many people on Earth." WTF are you supposed to do with that? So I'll give you some actual Old People wisdom:

if you decide to have kids, then you and your partner should have two kids relatively close together, e.g. 1 or 2 years apart, and then stop.

• Ain't nobody needs more than two kids. The planet doesn't need you to have more than two kids.
• But two works better than one; they'll have someone to play with and share secrets with and grow up with in ways that they can't with parents.
• Having them close together means you can play with them together, you can teach them to read together, and so on.