Sasuke's destined to become an avenger for line, since he had no choice
Ehh. I still don't quite agree with Madara though in that regards. If so, it would mean people don't have control of their own lives and their heirtage dictates what they'd become. I don't think Sasuke's ancestry should be enough to justifiy the wrongs that he committed. Madara brainwashed Sasuke, and Sasuke was too weak to see it for himself. That is what I believe.