to each their own

This is kinda my message to OP et al. You do you, you don't have to try to shame people who choose something else.

Admittedly, there's a "having kids" version of CompHet, like, people sometimes have kids because they feel like they have to, like they're supposed to, not because they want to, and that's dumb. But those people aren't addressed by the message of the OP, nor are they provided insight into the reality of OP's wisdom: you don't have to if you don't want to.

And some parents are fucking annoying. They think they're more important than everyone else (even their own kids) because they chose to take on more responsibility. No DINK should ever have to give up their spot in line, or work longer hours, because of your smug self-righteousness. But -- again -- these people aren't addressed by OP. (And, importantly, not all parents are like that.)

I have kids and I love having kids. I have no qualms with anyone who doesn't have kids. I sometimes have qualms with people who do have kids. Fight the real enemy.