...sparked by a friend's posting.
FWIW, I don't particularly care how a person identifies or presents him/her/themself.
Are you a decent human being? If so, dandy, we'll get on fine.
I don't mean to belittle folks; I realize that for many people, identifying oneself as gay/lesbian/bi/trans/red haired/left handed/protestant/aboriginal/whatever persuasion is an important part of one's identity. But to me personally, it really doesn't matter. I've met nice people and jerks of every gender/race/persuasion. (Here I'm using "persuasion" to mean most any physical or social attribute, whether congenital, imposed, or assumed.)
Am I curious about people? Absolutely, it helps me treat people better. Does one's persuasion (of any sort) help define who one is? Of course; every experience that one has builds the person.
But *TO ME*, identifying oneself as a member of a particular group is just that: an identifier. It makes as much difference to my opinion of the person as does whether they ate the left half of their potato or the right half first.
I hope that makes sense.