Definitely not a choice, in general. You are born that way. That is why there are gay animals. I certainly never chose. My older sister never chose. My ex-girlfriend never chose. My friends never chose. I have yet to meet a single LGB who chose to be that way. In fact, I have seen quite the opposite. I have seen LGB preten to be straight, even to the extent of getting married, to hide the fact that they are gay because of the backlash of society and its "norms". However, there are a very select number of people who choose to be gay, for whatever reason. A woman with bad past experiences with men, and thinks a woman can't hurt her the same way. Or someone is interested in how the "other side" (well same side ) operates. Or a little bit of college experimenting.