And this is what makes me laugh--though it is a SERIOUS terrible mess--is when Satanists go on about going against Christianity, when the religion they go against is as bad a mthafker as they are! it is like eeenie meeany miney mo--go insane, it's all the same.
Actually, that's a point I've heard brought up by many who profess satanism. They sometimes take the view that Christian "morality" leads to an oppressed mindset that ultimately results in an oppressive culture.
For example, they might advocate breaking taboo for the sake of breaking taboo. But ultimately, why? Because letting a society get into the habit of making things taboo just leads to that society oppressing or even murdering people just for being different, often in ways they can't help. It's not that they are necessarily against prohibiting things for good reasons. However, enforcing it ought to be gone about in a sober, pragmatic manner, not with a sense that the person breaking that prohibition might have "made the volcano god unhappy."
Or let's take the habit of conservative cultures of having oppressive attitudes on sexuality. It turns out that fetishizing sexual purity just leads to the malicious preying upon the innocent and the helpless. In societies that view sexuality as beautiful and empowering, it also tends to be expressed in a more healthy and compassionate way. It's really people who have ultra-conservative attitudes who usually end up finding destructive or self-destructive outlets for their sexuality. The person who is more liberated just ends up playing it safer and behaving more ethically.
Or let's take the Satanist's attitude on being assertive and showing your aggression. I have done some research, and it turns out that a lot of sadistic murderers are actually pretty timid and repressed in their day-to-day lives. It's been scientifically researched. The Satanist is correct that, if you really want to spit in someone's eye, don't waste time thinking about it, and just get it out of your system. Take the consequences. Learn your lesson. With any luck, you might end up learning a way of expressing your feelings without being a dick. The more time you spend thinking about it, though, the more a minor transgression might snowball into an enormous amount of internalized anger. Standing up for yourself in the first place might actually make you a less dangerous person in the long-run.
Therefore, doesn't the Satanist have an argument for bucking moral oppression? I don't subscribe to Satanism on the whole, but the position is not an indefensible one. More than anything else, it serves as an answer to "moral" systems that have been proven for centuries to be counter-productive and dysfunctional.