What is Michael Myers motivation?

Answer 1

Taking away from the odd and nonsensical plotline in that he was being controlled somehow by a shadowy and pagan type organization or something completely cartoonish such as that, Rob Zombie based his films in reality and not bad 1970's writing. In his films Michael is simply insane. It's as simple as that. He shows signs of severe disturbance as a child in these versions such as murdering his own pets and dogs and cats from the neighborhood (as this is the often warning sign of a future murderer of humans). In Zombie's version Michael doesn't kill his family out of some cryptic reason based in paganism and the occult, he does it simply because he hates them. He murders his mother's live in boyfriend due to the fact that he is highly harassing to both Michael and his mother verbally and most likely otherwise. He murders his sister and her boyfriend due to the fact that he likes neither of them. He spares his baby sister, Angel (later renamed Lorie Strode), and his mother due to the fact that he seems to have love for them. When he breaks out of the asylum and heads back to Haddonfield, he is doing it so that he may be reunited with his sister, not to kill her, at least that is not the original intent. When she rebuffs him and attacks him with a knife due to the fact that she has NO memory of him from when she was a baby, he then goes into killer mode with her as well.

Answer 2

Well his motive is to kill his niece which is Jamie .Therefore he kills anybody and everybody that gets in his way .