@slkshock7,
Well, Evangelical Christians believe they are on the winning side in the epic battle between good and evil. So it actually perpetuates belief in a very effective way. It's probably very rare for an Evangelical Christian to admit that their movement could actually even "die."
What seems odd to me is that often people in America are so convinced they have to choose between one of two extremes: Either the Evangelical Christian God is THE God, or there is no God at all. Ironically, this idea is also contained within Christian scripture.
What Christianity needs is, to open the door to some dialogue about the nature of God and human existence without shooting down everything that contradicts their fundamentalist view of scripture. Being aware that the Bible in it's current form has been severely edited, rewritten, and books selected based on the decisions of human councils, reformers, and the people who "won" the battle for what form of Christianity history should record.