Obito Uchiha's obsession was Rin. The main reason he agreed to Madara Uchiha's proposal was also Rin's death.
But if he simply resurrected Rin, given the state of the Ninja World at the time, she could still suffer the same fate again.
That was not something Obito Uchiha wanted to see.
He believed that a world filled with war did not deserve Rin. He wanted to create a peaceful, beautiful world worthy of her.
That was probably it.
But with his methods, even if Rin truly came back to life and learned everything Obito had done for her, would she really be happy?
Minato Namikaze and Kushina had treated Obito Uchiha like a son. Perhaps Minato Namikaze had not gone quite that far, but Uzumaki Kushina had truly treated Obito Uchiha as if he were her own son.
And this was how Obito Uchiha repaid them.
Some said Obito Uchiha only wanted to take the Nine-Tails and had never intended to kill Uzumaki Kushina.
But was that really true?
A Jinchuriki would die once the Tailed Beast within them was extracted. The Uzumaki Clan might have been special enough that she would not die immediately, but whether she could be healed afterward was something no one could say for certain.
Obito Uchiha clearly did not care whether Uzumaki Kushina would die because of it.
Before doing this, he had already prepared himself for his teacher's wife to die because of him!
Perhaps, in his heart, he still blamed Minato Namikaze for not saving Rin in time...
Richest Man in the Lighthouse: "@Minato Namikaze, after watching this, did you hate Obito Uchiha?"
Richest Man in the Lighthouse: "If he had never appeared, you and Uzumaki Kushina would not have died. Naruto would not have lost his parents, would not have been