I agree that we dont need a sub forum for it, but i think it should be (and pretty much already is) addressed with maturity when sex is brought up.

We all came from sex, and almost everyone has or has had sex, so it shouldnt be such a touchy subject lol.  Its not really that personal, and if it is too personal for someone to discuss, they could like you say, just steer clear of it.

from a lawyerly perspective sexuality does have a place in the health and lifestyles forum.  Because sex is one of those things that does have a place in the psychedelic lifestyle.  Just like there is discussion on yoga and meditation there should be some on sex.