Why I Think Obama is a Better Choice than McCain

I’ve been having heated (yet respectful) email exchanges with my grandfather (a staunch McCain supporter). Today’s exchange went thus:
His first email (the jist of it): You’re dismissing McCain’s POW experience.
My response (the jist): While I admire and respect his sacrifice, I do not think being a POW entitles him to the presidency.
His response (the jist): [...]