There are Christian Satanists? Correct me if I'm wrong, but I thought Satanism was a religion founded around Rand-like rational selfishness, and explicitly denied any supernatural entities.
Yes, they are "Christian" in the sense that all of the mythology and practices for their worship of Satan are derived from Christianity, and they still believe in a Christian God.
It is just that these people believe that they are defying and opposing the Christian God (Fighting for the other team). They still believe in this God, just no longer have it as the object of their worship and devotion.
This is also the more traditional form of Satanist in our society, and one which the more modern Satanist tends to oppose. The Modern Satanist is a self...
It has been claimed on this site that the fundamental question of rationality is "What do you believe, and why do you believe it?".
A good question it is, but I claim there is another of equal importance. I ask you, Less Wrong...
What are you doing?
And why are you doing it?