Please stop saying that the LGBT community is achieving victories when you talk about marriage and DADT. It’s the LGB community.
That hurts.
I think the reason LGBTQIA and any other alphabet soup letter exists is because anyone with a “not normal” sexuality or gender identity is seen as some sort of outcast, and the community is simply a conglomerate of those who fall outside the realm of normality. That’s why the letters keep getting tacked on; it’s one community, with a ton of different kinds of people.
So whether it’s a nondiscrimination ordinance protecting trans* folks’ right to pee, or the legalization of marriage, it’s a victory for the whole community.