why does michael myers kill

Michael Myers kills because he is essentially portrayed as pure evil with an almost supernatural and relentless drive. In the original "Halloween" film, the explanation given through Dr. Loomis is that Michael is a child who lost all conscience and moral understanding—in other words, he is a manifestation of pure evil with no rational reason for killing. His first known murder was the killing of his older sister Judith when he was just six years old, which was not motivated by anger or revenge but rather an inexplicable inner darkness. Michael's actions are often motivated by a desire to recreate the trauma and obsession from the night he first killed, which lingers in his mind. He is driven by a childlike curiosity about death and killing, deriving a twisted thrill from stalking and hunting his victims rather than pure rage. When he targets Laurie Strode, his sister in some versions, it is sometimes to repeat that original killing night or because of a cult-related curse in some storylines. However, much of his killing is seen as an expression of an intrinsic evil rather than clear motives like revenge or jealousy. He even plays with his victims, prolonging the terror for himself rather than quickly killing them. This combination of being pure evil and enjoying the hunt is what primarily drives Michael Myers to kill.