A Case for Petit
I've read that a lot of people on these boards seem to think poorly of Petit based on his behavior towards his friends. After watching the movie twice, I have to say that I don't think Petit is self-absorbed at all.
To me, Petit embodies the "free spirit." He is one of those unique individuals so enamored with art that he transcends the normal cares of life. Everything and everyone is a means to an end, and that end is beauty. He doesn't look at life in terms of relationships, loyalty, right and wrong, safe and dangerous--these are things for the rest of us to fret over. He simply locks his gaze on beauty and pursues his true lover without thought or consideration. Not to say we should all live like this, but we need people like Petit to show us how to transcend our problems and recognize the beauty all around us.
Like the quote from Shawshank, the normal troubles of human life are a cage for people like Petit--His feathers are too bright, so he needs to be freed from them. It is also worth noting that every person that ever gave a part of themselves to Petit did so knowingly. His ex even said that she knew from the start that she had two options--follow his destiny or leave him to follow her own.
These are only my thoughts and opinions. Feel free to leave your own.