What actually makes Obito the bad guy?
Maybe I'm overthinking this, but most of the Kages are not democratically elected. By modern standards they are essentially little more than feudal lords or despots. Their power and legitimacy come only from their waging of war and the assertion of control, not from the people. In a way, the current Narutoverse is inherently unfair. It creates wars and forces innocent kids to fight in them, kids like Obito. And Rin, and Kakashi. And it leads to a scale of unprecedented death and the desire for revenge.
It gives rise to scumbags like Orochimaru and to the deaths of noble guys like Hiruzen, Itachi and Hashirama. It is fundamentally and unarguably an unfair world where the innocent suffer. Who could believe there is something called "God" in such a world? That would be foolish, and it's easy to dismiss the words of the S06P as the empty words of a pathetic, idealistic hypocrite that instilled little more than war and the tools for war into the world.
Any sane man would want to reject that reality, and to do everything in his power to destroy it. Ultimately, Naruto is nothing more than a naive child defending a world that he cannot understand. He lost his teacher. So what? Everyone loses their teachers eventually. Jiraiya would have died of old age eventually. Flame away, but logically speaking I am right.
Twisted minds like Sasuke are created. It all culminates in an endless cycle of pain and warfare. Naruto couldn't answer Nagato for a simple reason, there is no answer. Obito is right, and Naruto is wrong. Granted Naruto will still win, as the title character. But I believe Naruto will never be able to answer Nagato's question. "I'll find an answer" IS a copout.
I think the Moon Plan is probably a much more realistic way to world peace than anything Naruto or the other protagonists have put forward. Naruto is simply a naive, moronic child defending a corrupt status quo that is beyond his ability to understand.