The recent chapter is kishi blatantly telling us the readers that obito's true reason are because of the corruptness that the shinobi system entail.
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Obito tells Kakashi that the one's who are responsible for what I have become is none other the very system you are fighting for.
Obito saw the true nature of the shinobi system and he most likely knew that if the mist would sacrifice a life to destroy the village for power, what would stop other villages from doing the same. He was right too. Look at the bloodshed that has been caused in the name of power in the past. Like i said in my post the naruto world and our world are just alike in the aspect of them both being corrupt worlds and that obito is the product of their corrupt shinobi system.