Why did Obito not use the Kamui Dimension as his secret base to hide things like his sharingan collection or the rinnegan he wanted to hide from madara?
Only Kakashi and Obito can access the Dimension and back then Kakashi wasn't able to teleport himself there, so the Dimension would be the perfect place for everything he wants to hide from other people. Any theroys why he didn't take advantage of that? The most powerful "weapon" in the naruto world is knowledge, so it would be the best to have everything that has to do with akatsuki in the dimension no one else can access unless Obito wants them to.
Only Kakashi and Obito can access the Dimension and back then Kakashi wasn't able to teleport himself there, so the Dimension would be the perfect place for everything he wants to hide from other people. Any theroys why he didn't take advantage of that? The most powerful "weapon" in the naruto world is knowledge, so it would be the best to have everything that has to do with akatsuki in the dimension no one else can access unless Obito wants them to.