If Satanism could work, then that would be a nifty thing to be in. However:
If everyone was a Satanist, there would be complete loss of all morals.
Worshipping Satan confirms the existence of God, and by doing that you are acknowledging Heaven and Hell, and choosing to go to Hell.
Satan is by definition, evil. By worshipping evil, you see it as the good thing to do, and people worshipping good as evil. Thus you cannot worship Satan, because whatever you worship you believe to be good, and Satan is evil.
Good and Evil are just perspectives. Common Sense is just prejudicies in the mind. The only thing we can really go on is that we have no programmed moral compass, but if your actions deprieve others of their own personal freedom, then that is wrong, as it is upsetting the balance of freedom. But then doing something good for someone would also be upsetting the balance. By that logic, doing anything at all is evil. Thus, we are all Satan worshippers. But you can't worship evil without condoning it, unless you don't know you are evil, than you get away with it. But after reading this, you now know that you are by nature evil in everything you do, justifying everything you do, because either way you are going to be evil.
But then again by walking the thin line between good and evil, by striving to do good and by your very own nature doing evil, we all create a balance in life. Even though doing good causes evil, evil can cause good. Everything has a silver lining. Being too good or too evil is the wrong answer.
The answer to life is to live a moral life, but not to overdo it. I am a Christian, but I am pro homosexuals having the right to marry. I smoke weed when I get the chance, and I lustfully crave any reasonably attractive girl in my age group. Satanists naturally commit evil acts, and choose to do so, thus upsetting the balance. Chaotic Neutral is the correct alignment, as laws only represent the intentions of man, which are by nature evil. Well, my download is done.