Just my two cents related to Satan and Satanists ...
Satanists, generally speaking, call those who worship Satan "Devil Worshipers." Satanists do not believe in a supernatural Satan, they believe in the way of the flesh (i.e., nature and basic human nature), do unto others before they do unto you ... and if it feels good it is good ... sort-of a take care of yourself and your own and to hell with anything that gets in your way ...
Of course, there are some people who call themselves Satanists who do worship Satan, but they are generally loners who are really Devil Worshipers.
Some 20 years ago, an expert speaker came to a prison where I worked, at a time when Satanic cults, child sexual abuse, and multiple personalities were sensationalized and exploited by the media. The expert did have some useful information provided by legitimate sources (e.g. FBI), but he did not have a clue how it related to a prison environment. The expert also did not have a clue about the basic principles of learning (classical and operant conditioning) and how they related to ritualistic behavior.
As I have mentioned in prior posts somewhere, prisons have quite a few self-professed Satanists who have little in common other than sex, violence, drugs, and some characteristic tattoos (e.g., 666) and ritualistic behaviors loosely based on Anton Szandor LeVeys The Satanic Bible and the Church of Satan. Prison-born Satanists are quite different from those who acquire their beliefs and practices in the community, largely due to their higher degree of cognitive-behavioral isolation. Well, in the prison there was an outbreak of Satanic graffiti and a variety of rituals, particularly among the mental health population (burning Bibles, drinking blood, drawing pentagrams in blood, etc). Oddly enough, many Satanists in prison have more than a passing interest in the Bible and Satan as he is presented in the Bible. Also, they are very interested in secret knowledge and power and control. So, I arranged through proper administrative and mental health channels to conduct a completely voluntary workshop on Satanism for the residential and outpatient (i.e., inmates receiving mental health services but who are still part of the general inmate population) mental health inmates. The workshop addressed the strategies and tactics use by Satan with Adam and Eve in Eden, with Jesus in the wilderness, etc., and particularly how the specific procedures involved in certain rituals involving Satanic rituals involving masturbation (specifically orgasm) and/or pain strengthened fear, anger, and related violent acting-out (self-injury as well as aggression). The workshop was exceptionally well received by the inmates ... and the so-called Satanic acting-out stopped. The inmates wanted more control, not less.
For those interested in Satans core characteristics (not necessarily the characteristics of Satanists or Devil worshipers), see
Satans BRACE Character Profile:
http://www.deviantcrimes.com/SatanBRACE.htm
In a sense, it is a profile of pure Evil as opposed to evil outcomes, mindless evil, etc. This profile is based on Satan as he is presented in the King James Version of the Bible. CAUTION: There are several pages related to the Bible contexts of Satan, so if you dont want to read anything related to the Bible, this one is not for you. There are also several pages which explain the profile process and graphics, etc.
The short version of the profile analysis is that Satan is a psychopath.
Just my personal opinions,
Russell