I think the story better ends when Naruto defeated Pain, for all villains after Pain essentially followed the same Ubermensch theory that considers the ordinary, unenlightened ordinary people a piece of xiete that better lives undifferentiatedly in the permanent terror or permanent hallucination. None of the main villains was emotional, but they all claimed that resentment was their initial motivating force, and they lived their devastations through the sheer self-glorification in which they considered themselves a great sinner that was willing to burden himself with all crimes of human race (by committing them). The final battle with Kaguya at least broke the pattern: Kaguya was the most simple-minded, dumb villain that I have ever encountered in any story (who happened to be the most powerful, reasonable enough). She just wanted to make a zombie army.
Anyway, I saw a lot of traces of Dostoevski in this story, and that's why I liked it. I liked the ubermensch discussion and how villains became themselves through irresolvable dilemmas for which no one claimed to be responsible. But similar with dostoevski: good conflict, bad solution. Naruto, known for his emotional shouting for peace/friendship that invariably ended up with violence and his grassroot empathy which was coupled with his extremely prestigious lineage, always provided the same, invincible answer to the dilemma he himself never encountered: love for the village/ love for the friends. The cool-face villains were all amused by his stubborness and spokesman personality, yet everyone was instantly convinced after being physcially defeated.