I'll say it -- I like him personally and I like him politically. I think he's smart and can be an effective leader. There are things I like about Obama, but things I dislike. As our deficit/debt balloons, I put increasing importance in reining it in.
But when the test comes, Republicans CONSISTENTLY ignore the deficit and instead focus their attention on social issues -- which are diametrically opposed to my positions on such issues.
This article well summarizes why I find it hard to vote for Romney. I'm still undecided, FWIW.