I honestly can't relate to that. I have had people who were lesbian make remarks towards me for that though. Because I have 'choice' and thus apparently it's not real or as genuine. I've accepted that people are going to feel that way no matter what. Mostly because there are a lot of people out there who are lesbian/gay who feel it can't be a choice, that it's something you know all along or have known all along. I can't speak for the person before or after me, but I can speak for myself on how it worked for me.
For me, sexuality was and still is a choice. I didn't start off feeling this way about women, but I decided that I could feel the same way about women romantically, physically, sexually and mentally as I do men. That's what I chose to do, and now it's a natural part of who I am.
While it may be that way, many people will disagree with you, basically because of what I mentioned before. It could be possible though. By that theory though, would everyone 'progress' farther then what they are now?