Nature isn't something that has intent so it's not any way of telling us anything. It is a merely a flaw in the subconscious that forces an individual to be attracted to the wrong gender.
I don't believe anyone knows for sure the exact cause, but my suspicion would be a mixture of both. A propensity down to a genetic cause, which can become active due to environment/personal experiences.
Well stap me vitals ! ..multiple responses.
I'm to p!ssed to sift through your interesting answers and respond with a clear mind right now, but will do later.
Keep 'em coming.
If homosexuality was "natural" to a species, how would it be an advantage to that species?
It would not be able to reproduce and hence in a generation it would be extinct. As the human race hasn't become extinct as yet, then it would seem to me that homosexuality was man made (nutured)
I would call it normal (in that it is fairly common) rather than natural. I think it`s nature rather than nurture though in men. I`m not so sure about women. Someone once told me "Gay men are born but gay women are made".