Mark Olmsted put into words the very realism of the repeal of don't ask and don't tell.
A few excerpts that really go above and beyond in explaining the issue in real terms:
"The Senators think gays are "icky." When they think of us, they have a momentary flash of having sex with a man, and it grosses them out. They also seem to believe that if a gay man had a chance to impose himself sexually on them, he would. This perception makes them mad at gay men, for imagined crimes of presumed intent."
"I submit that the only thing they find more unpleasant than imagining another man wanting to have sex with them is imagining that he would not. Their egos, perpetually primed by botoxed trophy wives, wouldn't permit such a deflated thought."
"John, get over yourself. This is the reality. When gays want to have sex with each other we have bars, bathhouses, the internet. Sometimes friends even introduce us, or we meet at the laundromat -- just like "normal" people! Bottom line, we have plenty of options, more than most straight men. "