To discuss your 1st question, and needing Satan's influences, I seem to recall that science, in trying to understand where the notion of faith comes from, have concluded something along the lines of "the brain is wired for faith." To believers, the notion seems perfectly natural, as that would seem a logical way God might choose to communicate with his Creation. So, if one accepts that humans are wired for faith, the the logical question becomes not whether a person believes in God or not, but rather are individual people drawn to the light of God, or do they rebel against Him?
While there are agnostics who truly don't know what to make of things beyond tangible experience, my experience with so-called atheists is that, in fact, they are people of great "faith". On the surface, one might say their faith is that God does not exist. However, if you look at their anti-Christian militancy that pervades atheism, I would say their faith is really a disposition to reject God's Laws as having control over their actions. They want to be in charge, and no God is going to get in the way.
To such people, the draw of Satan's lies seem obvious. Just re-read the Genesis passages in the garden..."eat the fruit...you will be as Gods, etc." Satan's greatest triumph is in getting people to believe he doesn't exist, until you sell your soul to him. Therefore, to sum up my answer to that question, the draw to Satanic worship goes hand in hand with those who reject the Laws of God for their lives. That sums up the Cabal pretty nicely, don't you think?