Ok the last guy made sense...it would just be a waste of plot if Harry just died.
But someone has to be the tragic-hero and I doubt that J.K would give any one but Harry that title...I mean she worked for 10 years creating this epic character and it would be really akward if she let one of the other characters be off as the hero!!! I seriously dont know what to think anymore....I guess ill find out in about 2 weeks!!= )