PROOF against evolution

I am curious as to why religious folk have a need for Creationism. What does belief in Creationism contribute to their religion? I should think that a truely religious person of the Christian faith would accept Jesus word that "all have sinned" and get on with their faith. I further curious as to why any would give any attention to Creationism when Jesus himself, the central authority of the Christian faith, says nothing about creation. If Jesus thought it unimportant then why do some of his followers?
I also find it very curious that Creationists will readily accept a version of how life began that has its root in a far older religion predating Moses the supposed author. A story that makes claims that cannot be proven and yet when virtually all disiplines of science present mountains of evidence for Evolution it is brushed off.
Recently I wrote to a number of Creationist institutions and asked the question "How much time have you devoted to the possibility that the controversy between Evolution and Creationism is due to faulty interpretation of the text of Genesis and that Genesis is describing evolution". The answer - they never even considered it. I am lead to believe that the problem is arrogance on the part of Creationists.