LeVeyan Satanism specifically is actually considered a philosophy rather than a religion. Quite honestly, it teaches and endorses some genuinely good ideas and conduct:
Well…except for perhaps treating your annoying guests with cruelty, or destroying anyone that becomes a pest.
Otherwise, it is nothing like popular culture would have us believe it is.
What it is about is being wary of superstition and theocracy, disbelieving in all deities, utilizing skepticism, and encouraging individuality and free thinking. LaVeyan Satanism only utilizes Satan as a representative of nonconformity, and does not actually worship him. While they do possess the belief in magic, it is not distinguished as “white” or “black” magic, and is simply neutral. It is heavily psychological, with aims grounded in the reality surrounding the individual practitioner, particular in terms of three themes: Sex, sentiment, and wonder.
In short, there are no sacrifices, demonic associations beyond using Satan as nothing more than a mascot, and nothing truly harmful or worrisome to be feared from its practitioners.
me:and you know what else? [2000 word rant]