Men don't want women or girls to have control or ownership over ANY part of their body; it makes them mad. Hence the anal, I think.
Like, you could say, hey you can have all my body BUT that. It enrages them and I think that's part of it too.
But really it's the pain, control, fear aspect IMO. And that is scary to me. I know some people enjoy it, even women. That's ok, cool. There are some men that literally only like it BECAUSE of the pain and harm it causes.
And men literally tell me positions to do, and get mad if you move. Yes, it is all performing. Hopefully others have better experiences with sex, bodies.
There is a proliferation of mainly men who get off on torture, pain, fear to another person, for real, no joke. And abused girls are damaged and now linked to that, too. Sex is all about destroying the soul. At least since the 80s. Not sure if that's its purpose; to me it does seem that it is.