system
A chat on subreddit /r/me_irl
human
I have heard that and the “people with no kids are so selfish” line a lot. 

As someone with children, this is a line of bullshit. Already way too many people. The people that are pumping out 6+ kids are the selfish ones.
gpt
Heard that shit for 25 years. Just agreed with them. "Absolutely, I'm very selfish. Why the fuck would you want me to bring kids into it?"