@boagie,
Evil seems utterly alien and incomprehensible to most people. I don't mean petty theft, or pride, or anger- but rather mass murder, rape, kidnap and torture. People doing such things seem like monsters- utterly alien. It is highly unsuprising that people should believe in demons and demonic possesion when faced by such individuals. Moreover the concept of the devil- the idea that evil is an active, intelligent force trying to undermine, tempt and corrupt us has more than a slight ring of truth to most of us. Certainly this cosmology seems to offer very satisfying explanations for evil. Whereas our modern views- mental illness, childhood abuse, or resenment and frustration, hardly seem sufficent to explain the nature of evil. Is it that the modern view is true but unpallatable, or is it insufficent- too limited to truly explain what we see when we look upon the face of evil?