I know, I just find that whole motivation to be boring and, worse, immature.
I preferred the time when all we had to go off of was a faceless, nameless madman trying to force everyone into peace. It's a matter of preference in the end, but I found the mystery more engaging, and even more intimidating, in a way. The things that are the scariest and most dangerous are the things you don't really know or understand. Kishimoto had also dragged it out for so long I was beginning to think he might never reveal him after all, but alas.
Obito isn't the worst, he's just way too much like Nagato for my tastes and I liked him substantially less than I liked Tobi as a villain.
EDIT: Also, he wasn't really trying to "prove a point"; he told Kakashi that he couldn't convince himself a world where Rin died was a "real" world, so it had to be fake and had to be torn down. Or something close to that, anyway. His point was that he was depressed over a single, individual girl he knew like what 20 years ago? It just seems so small-scale and immature for everything he ended up doing and there's a lot of problems to it.
