|Margarita, Queen of the Ball, cat Begemot and Koroviev|
Margarita becomes witch because of the "misery and despair" as she herself explains it. Being a part of a dark side she now in fact can see the light, can see purpose of life in protecting her master and living with him in peace. Bulgakov doesn't mean that the dark side has to be your choice, he doesn't say it about the light as well, but he promotes values of human life like love, passion,dedication, honesty, and one of the main themes of the novel as freedom of spirit, freedom of expression.
Witchcraft and Literature