Board Thread:Theories and Speculation/@comment-26152226-20150227163755/@comment-3279282-20150227213346

Of course we were. As I said, the curse of hatred roots in Hagoromo choosing Ashura as his successor. Indora got butthurt and began the feud that lasted for so long. Sasuke ended it by admitting that his ways were wrong. The curse of hatred issue is more of an incarnation problem that influences the whole clan, not a whole clan issue like the Sharingan and the emotions. If anything, the curse of hatred augmented the emotion issue even further, resulting in the eternal Mangekyo Sharingan (only Madara and Sasuke had it, both are incarnations).