What Causes Homosexuality?

[forevercloud3000]

I think this discussion is easier once we really start to eliminate what it is NOT. It most assuredly cannot be a conscious choice so that is out of the question. That leaves...
-Subconscious
-Genetic
-Environmental Factors/Social

Now to just come up with definitive definitions of those three, look for what it has in common, and go from there.