For me, it’s just something I know and have known since before I hit puberty. No children ever. I’m 30 now and still feel this deep within myself.
Also, lol, from the moment I got my first period I was having nightmares about getting pregnant

I still have them occasionally now!
Someone at work a few months ago asked me “when was I going to get pregnant?” And I was so stunned all I could say was “why would I want to get pregnant?” It felt like a trick question to me. It should be covered under some kind of legislation not to ask women about the situation with their uterus.