Being gay is a fetish.

[Esquilax]

Adding or dropping a team as an adult sounds like making a choice to me.

But you have to acknowledge that that choice is a fundamentally different one from altering your preference for either team; you can, after all, report as straight for years, even be married that way, before finally coming out of the closet due to being unable to hack the pressure. In that case you've technically changed teams, but your underlying preferences haven't changed at all, which is the point I was making.

Any studies along those lines that I've seen stop well short of saying they prove that sexuality is set at a young age. Links would be helpful.

I wouldn't say we've "proved" any part of this, or that we have enough available information to do so, since as a field of study it's relatively new that we're even talking about this; this is one more reason why it's ridiculous to start limiting people's rights at the moment. But the idea that orientation is a conscious choice that you make is patently absurd and directly refuted by the lived experiences of many of us; even you were unable to provide details of the moment you supposedly chose to be straight, and in fact, your argument relies on directly gainsaying the perspectives of other people, which I don't know why you'd think that's okay. If your position relies upon asserting that you know more about what other people think than they do, it is a presumptuous and flawed position; the absolute best you could say is that orientation was a choice for you, which is hardly a binding pronouncement on everyone else, especially since we can pretty well establish that sexuality is a sliding scale. You say you've gotten to choose, other people say they did not; your assertion does not take precedence. At best you've now identified two categories, one of which may only contain you.