So let's start off first by stating the world the Sage created is a miserable failure. It's seen 4 world wars and he even failed to stop his own sons from fighting and nearly destroying it. Many people suffered and died needlessly, amongst the Uchiha, Senju and other ninja families. The Sage of the Six Paths is a false God, and a well-meaning hypocrite, at best. At worst, he's an actual villain.
He also seemed to be aware of Sasuke's plans, yet did nothing to stop Sasuke and even enabled him by giving him more power. So it seems that even the Sage himself doesn't disagree with Sasuke's logic, at least not completely. The current Ninja system and the world of NV is hopelessly corrupt. Kakashi once stated Sasuke is a victim of the times, which I still endorse as a realistic moral view of Sasuke. Madara was a villain, a truly selfish nutjob that wanted to lord it over reality. Obito nearly went down that path. What Sasuke wants is a revolution of an undeniably corrupt system.
Naruto Uzumaki, on the other hand, is the unwitting pawn of a psychotic and corrupt Godhead. A naive, simplistic kid in an orange jumpsuit. Totally unfit for leadership, too immature and lacking in intellect. Sasuke by comparison is erratic, of course, but someone like Naruto would *NEVER* be allowed to lead a real world nation.
It should be the same in the NV right now. Neither Naruto nor Sasuke deserve to become Hokage, at least not yet. If the system itself does not change in NV, then more wars would be inevitable. Villages will go back to fighting over the TB and abusing their powers. Now that the villages have seen what the Juubi can do. Why wouldn't someone else try and reunite their chakra and become God with the chakra fruit?
Logically, Sasuke is right. Killing the tailed beasts is the surest way to acheive world peace and to remove ninjutsu from the world Naruto's moral imperative to keep them alive is based on *NOTHING* more than mere moral sentimentality and childish ego. They are not feeling beings, at least not in a human sense. In that sense, the lives of the TB hold no moral value. They are just chakra with a consciousness. Given the threat the Juubi represents and the TB represent, destroying them is not only morally justified, it makes sense.
My musings:
Sasuke = Naruto in terms of power NB has always been in denial about this. It's even more obvious now since we've seen the TB are currently sealed in Chibaku Tensei. Sasuke was reserving his power for the fight with Naruto, which is why he seemed useless in the fight with Kaguya. It's Yin vs. Yang more or less.
Naruto lost a lot of the TB chakra and Sage powers By comparison Sauce still has Shar-Rinnegan. I think the Sage took Naruto's power away, and left Sasuke's. Why? The Sage now thinks he made a mistake trusting his power to Ashura. He even alluded this to Naruto when he says I was wrong to trust in Ashura's views (the literal translation). More to the point...
Naruto will lose the fight with Sasuke. Why? Because he has to lose in order or the world to actually change. The world needs to change in order to end the Cycle of Hatred. The fight will end with Naruto allowing himself to be defeated, because he will realize Sauce isn't going to back down. He'll free Kurama and convince Sasuke to keep the TB in himself. Naruto will prolly still become Hokage and not die.
Kakashi can't stop them this time They aren't little kids anymore, and Kakashi of the Sharingan is over for good now. I think in the end Sasuke will win the fight, Naruto will win the seat of Hokage. The village system will be reformed and Sasuke will go off on his own in a TTGL style ending, taking the TB with him so that nobody can abuse their chakra anymore. Sakura may go with him.
In the end everyone thinks Sasuke will get TNJ'd. I don't think he will, because ultimately Sasuke is right and Naruto is wrong about what needs to happen in the ninja world. Naruto's fighting for a broken status quo at present.
