So as of now I'm not really sure what people were most sad about, that Obito is Tobi, or that it seemed so simple. I don't think it will bring peace to anyone's mind, but Kishi could have thought this out years ago, like he did with the ending, he said that he figured it out ages ago, and wouldn't change it under any circumstance. Well, he could have thought out Tobi's identity ages before the theories came out about him, I dunno.
Also I don't think people should be all heart broken, for all we know, that might just be Obito's body, it is possible that some, as of yet, unknown person found Obito's body, and because Obito was young he made a good vessel, kinda like what Orochimaru wanted with Sasuke.
It isn't much, but don't lose faith in Kishi guys, he probably wants to mind blow, with some crazy, but cool twist
Also I don't think people should be all heart broken, for all we know, that might just be Obito's body, it is possible that some, as of yet, unknown person found Obito's body, and because Obito was young he made a good vessel, kinda like what Orochimaru wanted with Sasuke.
It isn't much, but don't lose faith in Kishi guys, he probably wants to mind blow, with some crazy, but cool twist