He's cracked too many necks. The only way he can be forgiven is if he uses Rinne Tensei to revive those who have been killed by his actions - but do you really think a carbon copy of Nagato's fall is on the cards? I certainly don't. Anyway, the worst thing that could happen now is for Obito to give his life and make Madara the star of the show. With everything he's done so far in this manga, I can't believe he'd kill himself so that another guy can create the reality he so desperately craves. I just can't.