
In regards to the god/devil/heaven/hell religions, their mainfocus seems to be the eternity of the soul and whom is worshipped. Sex and all that comes with it doesn't seem to have anything to do with that any more than ice cream does (past the 'because god says' mantra).
Surely everyone will have an opinion as to why it's important, but most everyone has an opinion about most everything.
So other than 'because god says so', what's religion's reasoning getting involved in what people to in the privacy of their own lives?