It's a fellowship, and they have their own bonding rituals. How else could they keep all those ambitious, unscrupulous, and somewhat intelligent people from competing with each other? Kind of like the Mafia, they have to divide up all the opportunities and territory.

It could have been drugs, music, comedy, or even food that draws them together, and in our present system all those things work together to keep people in line. I suppose that sadistic sex rituals are their highest rewards, and that's where the increasingly open Satanism comes in.