Well!<p>> For most people (the asexual population and the abstaining Japanese youth notwithstanding), sex with another person, especially in the context of meaningful intimacy, is a source of joy.<p>> Watching porn by yourself all the time, although physically stimulating, is spiritually the opposite of this.<p>Participating in autosexual intercourse can absolutely be both meaningful and a powerful source of joy. It consists in the appreciation of one's own body, mind, and spirit as a full and complete flowering of the universe. Consensual sensory experiences allow that being to approach its own devotion fully.<p>On a less metaphysical note, this is really a marvelous denouement to the sexual brinksmanship that's infested society over the past few millenia.<p>From an individual perspective, I love having sex with myself. When partners I find attractive want to share, so much the better. It's not as much fun trying to convince them to, though, that part pretty much sucks, and this provides the best BATNA ever in that negotiation.