Here's my 2¢.
I'm former military. Served in the Army from 2003-2009 with 2 deployments(04-06 & 08-09). Each deployment we had openly gay members with us. We had absolutely no problems with morale, billeting, logistics, or mission readiness. In the entire time I was in we only had one person separated from service using the DADT policy. This individual was sluggish, had a smart mouth, poor performance in basic soldiering tasks, and had poor work performance reviews. He also decided to sleep with a married man. But anyways there were close to a dozen and all the rest did well in the unit. The consensus among us was pretty much one that we didn't care as long as they pulled their weight. All but one did and in my opinion no problems came from having openly gay members with us. The military is an EO organization. Gays should be included.
You have no idea what's like to be in the military and should not make stupid comments. That 1% that do serve are a direct reflection of the other 99% in America that may be "dumb or smart". If anything you should join based off your comment. You would fit in well with the rest of the "dumb" people as you say.