Religion

Satanism is not monolithic; I would say there are different currents. Some lack fanaticism and are close to atheism. From the note "Das letzte Einhorn":

The most common principle: "Live according to your desires, do what you want – as long as it doesn't harm others."

And what's wrong with that? Most people, whether religious or not, act this way despite all sorts of commandments. :)

If anyone is seriously interested in Satanism, I can provide a Satanic bible. I personally don't enjoy reading such things, and I don't consider myself religious. As for where the bible came from – it's better not to ask :D