Now you're just being silly, Obama is clearly very intelligent. But he's basically a neo-con in a liberal suit.
No True Scottsman. People were heralding the guy during the 2008 campaign like he was literally some sort of divine being.
As for voting for or against Republicans, I see no reason to do either, just as I see no reason to for or against Democrats. It is the very definition of an exercise in futility. It's like buying a snowboard based on the topsheet graphic. I take that back. At least a good topsheet looks cool on your wall, later.