I'm in a similar boat. There is no anti-natalist program or anything, like I have no intention of chasing people around about it, but at the same time deciding to have a child, for me, seems like playing dice with someone else's life. Especially in the world we've inherited, but it's not like things were perfect 50 years ago or whatever.
With that said, all the anti natalist spaces I've encountered online have been full of cranks at best, xenophobes at worst.
I met one of those anti-Mccartney guys. He was older, and a beetles song came on, he started saying "let's have a Beatles reunion: 3 more bullets" or something like that (I don't actually know how many were in the band, just whatever the number was after Lennon).