Nobody is bitching, it's just an un-answerable question. You cannot prov eit, neither can you disprove it. Also, might I add, this topic was brought to us because the TC watched that on episode of Family Guy where Peter gets the "Gay Gene."
Uhh, if it looks like a duck and sounds like a duck...
...it's probably a duck.
It seems improbable that anyone would choose to be gay, even based on circumstances it seems unlikely. It also seems unlikely that someone who is gay would suddenly decide they aren't gay anymore.
Saying we can or cannot disprove it is weak, if you aren't here to try to prove a point, you are wasting your time. It's a debate forum. Debates rarely ever lead to a definite answer or consensus, it's presenting the best argument you have and doing your best to wrap your/other's head around the topic at hand and hopefully come out a smarter person than when you went in.
Otherwise, why would people debate about things that will never be resolved? Religion for one is unsolvable or unprovable, yet it's like 80% of the threads made here.
If you want to use the "it's unsolvable" argument, you' better do it for every god damned post in this forum.