No, I agree with you on that. However, unless one is so called bi-sexual, or shares needles with someone who is, they aren't spreading aids.
It is immoral, but heterosexuals are not saying that their promiscuity is inherent.
We're not? Uh, I mean, they're not? ;) "I couldn't help myself" "It just HAPPENED" "It didn't mean anything, it was JUST sex" "Men are by their nature non-monogomous."
I think everyone will flee to any lie just to cover himself when he violates his committment. Trust me, I'm a man--most men DO think it's out of their hands, or rather, they push that as an excuse, ready to toss it out if they feel like stepping out.