Didn't you read the last two chapters? He said he is no one and does not want to be anyone but it is all lies....He and Naruto shared a link Via Chakra and Naruto saw everything he was thinking.. As for the part where you stated that they shared nothing compared to Pein, I would have to disagree with you....
Kakashi and Minato are two people that they have in common...
Again, Obito lied when he said he did not want to be anyone... Read the last two chapters!!!!!!!!
From last chapter
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Here, we see that Obito wants and wanted Naruto to abandon hope. He wanted to confirm his own beliefs. Naruto nearly did give up when he extended his hand to Obito. Obito represents a dark Naruto, one that gave up on his dreams, reality and ultimately even on himself.
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Now we see that unlike Nagato, Obito
really, truly believes that he will bring peace to the world through M.E.P. Arguably, he would bring peace to the world. Is Obito lying? Absolutely. He's been lying from the beginning. He doesn't want to do these heinously evil things, much like deep down Yagami Light did not. He's torn apart by it, and the only way he can justify it to himself is by abandoning his identity.
Why go that far to lie? Because he really, truly believes in what he is doing. Nagato was just a guy crushed by Pain. Obito is a guy that gave up his own identity to do what he thinks is right. He's said many, many times "All I care about is the Moon Eye Plan (and thus, a world where Rin is alive).
Naruto cannot bring Rin back. In the end, Obito will not give up on his dream, which is a world where Rin is alive. Or in a world with peace.
Why won't he give up on it? Because he's exactly like Naruto. Obito's statements and reasons are total B.S. but he still believes in his own dream.
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Obito spoke the words at the bottom of this panel less than 1 hour ago in Naruto-verse time. Bluntly put,
nobody changes their life philosophy that quickly. Nagato
was unaware of Naruto's past. He was unaware that Naruto was also an Uzumaki like himself. He wasn't aware that Jiraiya had so much confidence in him. Obito knows all about Naruto's past, because he caused most of it.
Does Obito want to take Naruto's hand?
Yes, again absolutely he does. Will he? No way. That means giving up on his dream, giving up on bringing Rin back and ultimately having faith in reality. That's just not the kind of guy Obito is. He's always put others ahead of himself, and he won't give up on this.
Why? Because he is 100% truly convinced that the end goal of what he is doing is right. Because Madara mind-washed him into believing that. Obito's regrets are related to not returning to the village and for the pain he is causing everyone to get to what he sees as a justified result.