Board Thread:Theories and Speculation/@comment-34656247-20180408204136/@comment-35622277-20180413111823

They can probably heal the stress placed on your brain, but unless they can erase specific memories, I doubt they can heal your mind.

Evidenced by Sasuke, who was subjected to an already emotionally traumatizing event again and again, in contrast to Kakashi who was only subjected to perceived physical torture.

Sasuke pretty much went off the rails after this.

Now if Kakashi were subject to reliving Obito's death, and killing Rin for days on end, I'm pretty sure he'd be screwed.