I don't think it's selfish to not want kids. With how fucked the world is, maybe we should be thinking about if it's instead selfish to have kids.
I determined from about age 12 that I didn't want kids. 10 years later and I still don't want them, so I removed the possibility of accidentally having them. The government can't make me have kids - seeing as I yeeted my uterus.
Small correction - federal minimum wage is $7.25, not $7.29