All I'm Sayin'! round II

A long debate on NPR and more on the TV news today about gays in the military.  A study is out now that surveyed about 115,000 military personnel, including combat troops.  It turns out that among service men and women who have served closely with homosexuals, they...do not really mind if they are serving next to any capable person, gay or straight.  Right now I'm watching The Daily Show show clips of John McCain in the congressional hearings about Don't Ask Don't Tell.  After hearing the pro-repeal opinions of Defense Secretary Robert Gates, and Chairmen of the Joint Chiefs Admiral Mullen--and supposedly hearing and understanding the results of the study--McCain said some interesting things.  I find it very funny (NOT ha ha) that the last rhetorical line of defense of some military stalwarts (and mavericks) is to suggest that the issue basically needs to be decided by subordinates.  Because they weren't just asked about it in a huge study.  Because giving subordinates a choice in the matter is definitely how the military has always worked.  Can anyone figure out why REALLY some people don't want this change?  Talk about a cock block.