Board Thread:Wiki Discussions/@comment-24826628-20140428221232/@comment-24826628-20140428222741

I agree with you and thats what I think but the fact that relatively all Mangekyo Sharingan is caused by death and what you were talking about I think I can explain it. Remember Sasuke despised Itachi he just hated him, it was the trauma of knowing the truth. In reality its the trauma of losing a loved one is the strongest to cause the Mangekyo