Ever have sex with a human other than yourself? If so, do you have the same sensations? If not, why not? What I'm thinking is, either you have guilt over masturbating, which is common, or when you have the release because your brain is generating thoughts that are contrary to what would make you happy -- and I have no idea what causes depression and anxiety and neither does anyone else, really, some of us just become prone to it -- you're also getting a contradictory reaction to this pleasure. There are also times when people masturbate compulsively for all sorts of reasons, and anything we do from compulsion can feel not so great when we're done.