Snowy Rainbow said:
Well, are tall people tall because of the way they were raised?
Besides, a straight couple raised the first gay person.
None of your arguments hold up I'm afraid. The first one is kind of obvious, height is purely based on genetics, no argument, sexuality is a behavior or a preference, something we know can be affected. Not saying you are wrong, just that it's a dumb argument.
Also, Being gay because of your upbringing isn't the same as "raised by gay". Again, not saying you are wrong, just that your arguments dont hold up.
Personally I believe it's mostly nature, but not only that. We know for a fact peoples sexual preferences and fetishes is often strongly based in childhood. If you can gain an "artificial"* liking for ex; sex with fat people, old people, BDSM sex foot fetishes etc, what is to say you can't get an artificial liking for the same sex?
But yeah, still 90% nature I'd say
*I don't mean artificial as in wrong/ not real, just not born with.