I never got the lesson on how human female breasts are meant to be sexual/erotic. Had zero teaching about anything to do with sex from parents (they divorced when I was 12) or at school, and had no sexual experience until my mid-20's and it was a series of fumbles and mis-steps for quite a few years.
I am fairly certain I was not breast fed as a baby, so I would never have got 'wired' to find breasts sexually attractive. I think they are, but it's not automatic nor do I know what to do if I'm trying to be intimate. Last intimacy of any kind for me was 8 yrs ago when second ex and I were trying to make our daughter (it didn't work and required IVF which also failed then egg donor).
You can ask the same sort of questions about why a woman would think a man's penis is sexually attractive if not conditioned by society to think so. Or why some women think other women are sexually attractive, or some men think other men are sexually attractive. It's societal conditioning mostly.
I lived with my mum after the divorce until I left home in my mid-20's. Mum expressly forbade anything with girls (which didn't matter as I had no interest in girls and really didn't even know what sex was in school or uni) so I probably would have got a tirade of anger if I'd actually been interested in sex and talked about girls or wanted to have girls come over as friends. To me sex was something never to be talked about that only other people did.
My parents are both passed away so can't ask about my early childhood from their perspective, and dad had no contact with me from about age 16 until his death.
