Masturbation is, well by catholic law anyway (I would know) a sin, pretty major too. But when you look at what it is, it is a means to satisfy sexual craving in a manner other than intercourse. In reality the actual body has no way of telling the difference between self stimulation and intercourse, doesn’t need to. Thus the only difference between getting laid a lot and masturbating every night, is personal knowledge. The whole point of intercourse is to multiply ones species, and as an intelligent life form we know that it would be unwise to be having lots of children. Thus masturbation becomes a safe way to relieve cravings without the possibility of an unwanted pregnancy. And its not only humans that masturbate, animals do it as well (I have a couple of funny stories about trips to the zoo I have had…). And fuck it, most of the people here are nerds anyway and thus have virtually no chance of getting laid any time soon anyway.