OK, I'll bite. In college my minor was archaeology, a field completely dominated (at least at my school) by women. I've been the one guy in otherwise all-women classes.

Compared to my CS classes, it was like a breath of fresh air. (I actually double-booked my afternoons, and walked out of Operating Systems halfway through class to go study ancient Peruvian pottery. It was therapeutic.) I felt like a curiosity at first, but never trivialized or resented. As always, I gravitated towards a couple other people in the department as friends, but they didn't happen to be men.

The pattern I saw was not that men (or the dominant sex) are trivializing and resentment-laden, but that specific departments were. Even the women in the CS department were into the macho-geek BS, and a lot of us men hated it.

That's why we're offended by the suggestion that there should be special anything for women in CS. A lot of us men want computing to grow up, too, and we feel excluded by these women-only programs. There's your sex discrimination.