I agree; if the constraints of traditional religion don’t interest them, they’ll just make up something else. I see witchcraft as appealing to just a younger version of environmentalists (who grew up with “Twilight” and crap like that); people trying to fabricate meaning in their lives.
As some old friends of mine who know about this stuff have said, young people who dabble in witchcraft aren't just playing with make-believe, they are playing with a high-voltage power line.
Very dangerous stuff.
Witchcraft isn't just make-believe, it is a gateway to demonic attachment...even a gateway to demonic possession. And though we like to pretend this stuff is just myth and make-believe, it is very real.