Ok, lets look at the don't ask don't tell military policy from three standpoints. (a) You are gay and you join the military. (b) You are not gay, join the military, and you may or may not get the heebie jeebies when you
discover there are gay people in the military. (c) You are in a military command position, and its your job to worry about how effective is your unit.
IMHO, the military should be weeding out gay people who are simply trying to seduce or force a non gay soldier who does get the heebie jeebies about gay people. And to that extent, that gay person asks for it under don't ask don't tell. On the other hand, if one gay soldier finds another gay soldier and they hook up, they can get away with it infinitely under don't ask don't tell if they are discreet. But if they either allow it to be too open or get caught by our hypothetical non gay soldier prude, they both get booted out under don't ask don't tell. And then the military may lose two otherwise effective and more valuable soldiers to keep some in denial prude sheltered from the real world. And then from a unit effectiveness standpoint, one might wish to make a distinction between combat soldiers who will camp out with their buddies, in essence bunking in close proximity, with specialized personnel like translators who will often work in an office type environment and bunk off base after they complete their 9-5 duty. And in the case of translator and other specialties, our military has certainly lost a tremendous number of very capable gay people and that loss does detract from unit effectiveness.
And in MHO, Obama is making the right signals, the policy of don't ask don't tell should be under review, but it should not be imposed by fiat, but rather should be more of a total group decision. Like all policies, everyone will not be all thrilled, but its still better than being imposed by simple fiat.
And because I do respect Grunt03, I will ask his opinion of this post.