The reason evolution is such a threat to many (not all) religious people (I'm an atheist, so you can figure out my bias :)), is that they believe in life after death, that is, that they will live forever. To actually "die" when you die scares them out of their minds. Literally. To their way of thinking (and I've discussed this with a lot of believers), if "evolution" is true, then religion must be false. It is an either/or thing for them. I heard one Christian tell me that if evolution were proved true, he would have to stop believing in God. Which means he would also not have eternal life, he would die like a bug. This makes the theory of evolution a mortal issue, and one that must be fought to the death! Fear of final death, which most Christians deny, is the prime motivator behind creationism, intelligent design and all other "stealth" methods of trying to insert magic into science. It is interesting that most religious people are not even aware of this deep seated fear in themselves. But it is always there. That is the power of religion - you do not have to die. The real solution to this is to encourage people to accept that they will die in reality, and anything else is only wishful thinking, but it is enormously difficult. Religions have thousands of years of experience and huge institutions which effectively persuade and convince people they will live forever, if they just don't "think". And so they don't. Think.