Continued from a comment I made myself under the Bewitched post:
Besides it is not just what you can *get* (with special powers), but what you can *do*.
Why limit yourself? I bet most pets are perfectly happy, but would you limit yourself to the life of a pet?
Many might say the human life holds all they would ever want, but isn't that just like the pet having finally convinced itself there is nothing for it outside that fence?