I'm active duty military, and consider myself pretty informed (relative to most Americans) about politics. Ron Paul is the only candidate that's ever made me pull out my wallet (even from my relatively small military pay).
For me, it had little to do with his "get the hell out of Iraq" stance. Iraq barely registers on my radar when it comes to issues. I think it was a colossal political screwup to go in, and then our political leadership continued their trend of screwups in the execution of the occupation, but I have a "we broke it, we bought it" mentality about the whole thing now. I have mixed feelings about it... whether we decide to get the hell out or that Iraq is something spending lives and our children's money on, I just want to see people thinking about our course of action. "Stay the course" or partisan bickering with no plan for progress either way is retarded when there are IEDs blowing up Humvees full of guys that we sent over there.
My support for Ron Paul has to do with the fact that our country is being run into the ground by both political parties, and Ron Paul is the only one who is even talking about the issues that will eventually cause America to fall apart. Whether or not you agree with his solutions (which I do), I think every American who sees our country going downhill has an obligation to try to address those problems, and RP is the only one who is even trying. Everybody else is just carrying their handbasket toward that warm place at varying rates of speed.