Penetration?

I really don't like the word "penetration" when it pertains to sex. It suggests so much stabbing and unwillingness on the part of the penetratee. Like if you're taking someone inside your body, you're just lying there while they stick something into you. It sounds invasive. It connotes violence.

It's hard to find a word, though, that conveys the same action without being awkward. I find myself referring to intercourse as penetration in public contexts because it's the socially acceptable term for fucking. It's a euphemism, the word you can say on television or in a classroom. It's almost scientific. They use it in textbooks. It's like an official term. I use it all the time, for lack of a better word.

I really don't want to do this anymore.

A few weeks ago, I was reading a book on pornography (I can't remember which one, unfortunately) and instead of calling it penetration, they called it intromission.

Activities like fingering, dick in pussy, and strap-on anal are intromissive. To intromit very simply means "to enter." I don't think it has the same connotation of active and passive roles or of aggression that "penetration" has. It also preserves that scientific quality, the euphemism that's useful in stuffy situations. I definitely like it.

What do you think. Do you like/dislike the word penetration? Would you ever use "intromission" instead? I'm curious to see if it's something that could ever catch on.