Love, grief, letting go of the past and becoming your own person, etc.
For me, the mark of a true masterpiece is something that teaches me valuable life lessons.
Even the toughest of will would have a hard time going through what he went through, which is why it is completely understandable for him to harbor such a deep rooted hatred for himself.
Sure, it is understandable and even acceptable for us to blame tragic situations for how we turned out to be, but doing so we are ultimately unable to confront our demons and move on.