Cats were often familiars to workers of magic because to anyone used to wrestling with self-willed, wayward, devious magic--which was what all magic was--it was rather soothing to have all the same qualities wrapped up in a small, furry, generally attractive bundle that. . . might, if it were in a good mood, sit on your knee and purr. Magic never sat on anybody's knee and purred.
The situation of the factory worker today is reminiscent in certain respects of that of the nineteenth-century capitalist whose wife dragged him reluctantly toward "culture" and away from his "materialistic" preoccupations.