I read the Satanic Bible of LaVey a few yrs back. I didn't find it evil so much as ruggedly individualistic. Its no more or less evil than any Left Hand Path religion, which is most common in the East (Left Handed Tantric Buddhism or Hinduism, for example), but can be found as offshoots of Western Faiths too. Some forms of Kabbala are arguably Left Handed, both Jewish & Hermetic. Granted, Jewish Kabbala, & Hindu & Buddhist Faith are predominantly Right Handed, but the fact that Left Handed variants even exist tells you something. LaVeyan Satanism is no more evil than that. I suppose other forms could be more sinister, of course.