Harry Potter

Erotic and romantic love are inaccessible in death. The casualties of war are great personal motivators for hatred and violence later on in life. For instance, Severus Snape lost the love of his life in a war that ostensibly ended the day she died. For years afterwards, he hated her son not only on the principle that she may have lived if he had not existed, but also because he served as a reminder that she never truly loved him, even while alive. This interesting mixture of actions and motivations creates three dimensional characters who have both villainous and heroic qualities.