Looking at sexual behavior as rationally as I can, I come to the conclusion that safety and consent are the only things that make sex moral or immoral. Because of this realization I tend to be far more casual about sexual encounters than probably anyone I know. Of course, this leads me to be branded a slut- in a good-natured teasing way among friends (though it still kinda hurts), and in a cruel way by other people. Even among my more sexually liberal friends, promiscuity is, for the most part, seen as something negative, and I find this puzzling; this view contradicts statements they have made regarding the morality of sex.
Input? Is there, in fact, anything wrong with satisfying my desires in any safe, consensual way that I can? Why the divide between what my friends say they think and how they act on this subject? Are there other things you can think of that affect the morality of sex?