Originally Posted by
Anteros
Tony Stark is a snarky playboy who struggles with personal relations, responsibility, and alcoholism. There's plenty there for an audience to relate to. He's basically a perfect protagonist for a Whedon film.
Compare to Superman who's biggest issue is that he's just so perfect and powerful that he has trouble relating to the people he protects, but chooses to be human anyway. You might enjoy his story, but you don't relate to it the way a former alcoholic or partier will with Tony. Or the way a broke college kid relates to Spidey.