Snape was a man who walked out of the darkness, but always longed for the light; a man who regarded all good and evil as nothing but ultimately died trying to protect his beloved. Fate was unfair to him, and all misfortunes befell him. However, if we could do it over again and make another choice, what would the ending be like? Snape, who already knew the outcome, was determined to never let go of Lily's hand no matter what. Even if it is death, we must go with her.