It might be those that are antinatalist want to feel that they are sharing their beliefs with others that feel the same way. Maybe it doesn’t have to be a message for those having kids but a way to feel accepted for believing that there are too many humans already and we could really do with a fuckton less.

The planet is on its way towards an extinction event and we are driving it. Some people chose not to want anything to do with children.

I mean a group of people can talk about a common belief and explore some of the concepts further.