You're not wrong for being uninterested in relationships with men. They, however, are also not wrong for being interested. You are simply different people who don't really get on very well. You find their conversations boring, but if you attempt to steer the conversation in different ways and they don't engage with it, then maybe they find your conversation boring too.
Everything you've said suggests that you don't really like these women at all - in fact, you come across as being actively disdainful of them - so maybe it's just not a good match? I know what you mean about feeling lonely in a group.
As others have said, maybe look into socialising in different ways, linked to hobbies or whatever. A lot of towns also have local 'meet-up' groups for people who are on their own and just want to meet new people or go to events in a group as friends.
Also ... I'm sure you don't mean it to come across like this, but it sounds from your posts that you've decided that being interested in relationships and dating is silly and shallow and a bit thick, and that being a parent means someone is boring and child-obsessed. You sound as if you think your friends' interests are a sign of weakness and stupidity, but clearly that isn't the case.
I think maybe your notion of what makes someone intelligent/interesting is quite rigid, and you do give the impression (again, I'm sure unintentionally!) that you feel intellectually superior the people around you because of the things you like to talk about. But that isn't necessarily the case. People can be interested in lots of things - I could happily talk for hours about a lot of the topics you mentioned you were interested in, but I could also happily talk with my friends for hours about their relationship woes, or football, or makeup, or which restaurant does the best chips or something.
So while it does sound like you're not really compatible with this particular group, remember to keep an open mind when you're meeting new people :)