I know someone can say this more eloquently than I will, but basically they are doing it because society as a whole believes "the devil is bad" and they want to be seen as bad (cool), so they do this mockery. I don't think they really believe in him at all, or that he gives them anything; he's just a neat prop to look like they are oh-so bad-a$$.
As for why Father Satan is "allowing" this is: I imagine maybe it's because he knows they're fools, and will be exposed as frauds. 'Course I could be off on the idea; it's not like I am his spokesperson!
with eternal love & devotion to Satan
with eternal respect & honor to the god/desses of Duat
with friendship to my fellow Spiritual Satanists
