I had been wondering whether proportionally, blind people end up not being gay either because of the double stigma, or problems getting on the gay scene and then coping with its shallow "looks-based" culture, or because when visual stimulus is removed then there's less incentive to have a same-sex partner even if that's what you'd like. If blind gay people exist, then is that an argument for "nature" rather than "nurture"?
This essay answers all of my questions (except the last one). It's by a guy called Robert Feinstein who is blind and gay. Some of what he says is depressingly familiar - getting all excited about going to a gay bar for the first time and then being ignored by everyone when he gets there. At the risk of letting my ironic/cynical guard down for a moment, his article really moved me.