Madara's Arrogance or Stupidity
I mean really...
Madara: Hey I saved your life.
Obito: Yeah, I see, thanks man!
Madara: Alright, Tsuki no Me, here's the run down.
*Explains Tsuki no Me*
Madara: So yeah, when the time is right, you're going to have me resurrected to become a god, right? The god that you could just as easily become?
Obito: . . .
Obito: ... No, yeah totally. I'll totally be doing that for you...
Madara: Thanks! Kinda like I scratch your back, you scratch mine. Haha.
Anyone else see the foolishness of Madara's reliance on Obito here? Seriously... He filled Obito's head with ideas of a dream world, but what if Obito had the thought "I can create this dream world without Madara." He obviously did have that thought.
In Madara's defense, I guess that was his only option, but still Obito had no intention of letting Madara become God... I think that's pretty funny.