You don't have to consider all forms of sex deviant if they don't result in procreation. Sex IS fun. It DOES feel good. But a human with the inborn instinct to partner pointing at the same gender, other species or pre-pubescent children is disordered. While the outward indication, the sex, is deviant, that's just the actions that result from the "f'd" up instinct in the first place. A human can choose to have sex with a tree or a dildo, but wanting to marry one because you "love" it would be a totally different issue. Your bullshit "any sex is deviant" is just another dodging bullshit simplistic argument to avoid the fact that no species on the planet has a real use for homosexuality. We only know that "it happens". Well so does siamese. And we can all agree that walking around with 2 heads might have its issues.