Hey! I'm "sex positive", I just don't have much of a sex drive myself! Let's make that distinction clear shall we? :)

(just kidding, I know what you mean)

I think you may be on to something regarding the difference between certain types and styles of spiritual approach though. They do tend to range from advocating abstinence as a way of generating (or maintaining) chi, to sex as a means of experiencing union with the divine...