Alright, let's see here...
I was raised by a bunch of fags and pot heads. Despite the behaviour that I exhibit online here, I'm actually a very stable, very normal kid. I'm not gay, I'm not a drug addict, I get decent grades in school, you know, the usual. I've never been lacking love and affection or role models of any gender. There is nothing wrong with being raised by two men or two women. If there was, then children raised by single mothers (IE me for the first 5 years of my life) would turn out messed up.
Now, homosexuality and bestiality, paedophilia and incest are very very different. Homosexuality doesn't hurt anybody any more than heterosexuality does (barring any religious and moral objections). Bestiality often injures either the person or the animal. That makes it bad. That and the fact that animals can't give consent, but that's something different... Paedophilia is bad because, put quite simply, a child cannot give consent and it almost always hurts the child, physically and/or mentally. Incest is bad because of the mutant offspring it produces, but ultimately, what goes on in between two consenting individuals is none of my business... If you want to f*ck your mom, go right ahead. I just don't want to know about it, and try not to have a child.
william, shut up.
A disease is an abnormal condition of an organism that impairs bodily functions, associated with specific symptoms and signs.
Homosexuality impairs no bodily function. Their body works perfectly fine. Nothing wrong with their normal bodily functions. Disorder, maybe:
Mental disorder or mental illness are terms used to refer to a psychological or physiological pattern that occurs in an individual and is usually associated with distress or disability that is not expected as part of normal development or culture.
But that sure-as-fucking-hell is not a reason to deny them ANYTHING. I mean, you don't deny people with ADHD or depression the right to get married because they're "unnatural". And quite frankly, I think that our society would be less natural if we didn't have abnormalities in it. "Unnatural" things are a part of humanity. And you could say "Oh, well since they have some sort of disorder they should get help for it." but that would just do more harm than good. Imagine the psychological and physical side effects of being forced to take medication for something that doesn't need to be fixed. Personally, I think that drugging yourself to overcome something like that is far more unnatural than your natural "disorder".