That's easy. They are facinated with majik and anything but the truth of Christ. It's just another way for them to be their own god.
"They are facinated with majik"
I think they like anything "spiritual", but must avoid biblical faiths at all cost since those involve rules. Plus, they fundamentally look down on traditional faiths/values, so they can't find spirituality in those. That's why they're so easy to get into cults.