And I have no doubt that Obito doesn't give a single fuck about anyone else's deaths or suffering. He only cares about getting his childhood crush back. The rest is just an excuse so he can feel justified in doing whatever it takes to get what HE wants.
You know this because up until she died, Obito had NO problems with the the way the world was. He loved being a ninja. Thought it was the coolest fucking thing ever. Even after being crushed by a boulder, he's all "I can't wait to get back to being a child assassin!" Then Rin dies and he's all "THIS WORLD...IS HELL!" He doesn't give a shit about anyone but himself.
After all, is EVERYONE going to get their loved ones back in this world Obito creates? No. Because he's creating the illusion. So he can only fix the shit he personally knows about. He's creating HIS perfect world. It won't be a perfect world to anyone else, but they'll still be forced to live inside it.
He's basically creating The Matrix. Only his reasoning for doing it isn't "to provide the energy needed to power our entire civilization" like it is in The Matrix. It's "to make a fake world where I can pretend the girl I like is still alive".