Fortunately, the Founders were smarter than making military a prerequisite for elected office. It helps keep the overlap between civilian government and armed services to a minimum. Military careers didn’t do too much for a slew of liberals or democrats that I can name off the top of my head.
I’d also hate to think the multiple seizures I experienced in Basic Training and effectively ending my enlistment would prevent me from running for Congress at some future date. Just so I don’t keep you in suspense, I was later found to have a cerebral AVM. That’s not something that can be faked.
I have known people who received honorable discharges for medical reasons. You’ll find no argument from me there, nor with your other statements.
In general, I am uneasy with politicians making decisions involving armed conflict when they themselves have never been in the military. That is why I wrote what I did.
As to Barak Obama, I believe he doesn’t care a bit about the lives of folks in the military.