People tend to worry about the future. We want to predict events and circumstances; we would like to have guarantees. Marriage vows, insurance policies, pensions, savings accounts, legal contracts, and oaths of allegiance are all examples of this desire. It is difficult to live with uncertainty and ambiguity, especially if you doubt your ability to handle whatever happens. Fundamentalism preys on the normal concerns people have by painting the world as completely out of control and humans as essentially helpless.
