Can you justify the "don't ask, don't tell" policy of the military in the U.S.?

I see Obama wants to abolish this practice which, in my opinion, was an illogical and a very ridiculous policy. I say, way to go, Mr. Obama.(and I usually think he is way off base on financial policy, but dead right on his social reforms, just from my catbird’s seat). But perhaps you see it from a different perspective, and can add input. Or perhaps, you just don’t get it and can shed light on what is required to sway minds to accept it. I respect all opinions, agree or not.