So you think there should be gay-only and straight-only units?
It reduces the risk of harassment by homophobes and reduces the risk of sexual harassment by some disrespectful homosexuals. The day respect is going both ways, we can consider full integration.
I say we win gay marriage rights first before considering full integration, since that would at least be proof that society at large is willing to accord gays the same rights and respect as any other group.
Of course, I support opt-ins and opt-outs of the segregation - if a straight soldier has no problem serving with gay soldiers, then by all means, he should have the right to request to serve in their units.
How is desegregating based on race a good idea while not desegregating based on sexual preference a bad one?
I never said it was a bad idea. Just that segregation by orientation to me seems fine.
Don't racists feel just as "uncomfortable" around blacks, as straight bigots do around gays or vice versa?
Racism is very different from discrimination based on sexual orientation. The former is based on appearance, whereas the latter is based on behavior. Discrimination based on behavior, from what I know, is a very big part of the military. Not everyone's cut out for it.
Now you could just eliminate all homophobes and all homosexuals who'd harass heterosexuals, but this would probably be more difficult than it sounds. Never mind, it opens the door for Salem 2.0.
Are you advocating gay-only and straight-only bathrooms as well?
Hardly. You're in the bathroom for a short time generally. Unlike barracks, where you will eat, sleep, and spend most of your day with your comrades. Lifestyle becomes very important here.
You should try meeting some women who aren't quite so reactionary.

Reactionary?

Women feeling uncomfortable around men while doing their business, I think, is hardly reactionary. I don't see most of these women defending the great constructs of the status quo - they just dislike the idea of sharing a bathroom with men.
Never mind there'd be a spike in the murder rate if we had unisex bathrooms. So many men leave the toilet seat up and... well...
Some statistics would be nice
I don't have the stats, but it was traditionally used in many cultures. The Greeks and the Japanese, I believe, were quite fond of the idea.
So you're are fine with what has been attacked as homophobia?
How in God's name is being attacked for hitting on someone when they don't want it homophobia? Does a women hate men when she throws her drink in your face when you hit on her in a rude manner? No, not at all.
Sexual harassment is harassment, regardless of orientation.
Try one for harassment, try the other for assault. But there is no bloody homophobia in the scenario I describe.
Sexual attraction is indeed like skin pigmentation in that it is biologically determined, and they are alike in the sense that a free society would ignore both traits as socially irrelevant.
Except generally, skin color doesn't determine what skin colors you will be attracted to. Sexual orientation does. It is a very different quality, as it involves romance. Skin color is just how you look.