Why do evolutionists feel so threatened by creationists

A friend, and fellow conservative/Christian/scientist, pointed me to an American Society for Biochemistry and Molecular Biology website, where they have a link for a symposium titled "Teaching the Science of Evolution Under the Threat of Alternative Views". He pointed out the use of the word "Threat" and asked the question of why are alternative views a threat in science. After all, if we as scientists do not allow ourselves to question current theories, we will inevitably theorize ourselves into an erroneous corner from which we cannot escape. The need to think critically about all of the science I encounter was pounded into me while I was in graduate school. After all of science is really just a set of theories that approach fact, but never quite get there. However, most scientists only preach about thinking critically until their favorite theory is questioned and then they turn militant in protecting their intellectual constructions. I can understand people who believe in the creation feeling threatened by evolution because it attacks their faith. I don't quite see why the evolution zealots are so up in arms about people who want to maintain faith in a creation. Is it because science is the only faith they have? I think a big part of the problem is that most scientists are so vain that they cannot stand to have their wisdom placed below a God whom they cannot comprehend. Are we building ourselves a scientific tower of Babel?