The thing is that most of the die-hard creationists involved in this kind of thing automagically assume that evolutionists are trying to disprove the bible. They often cannot even fathom the idea that there are people in the world who have not even read the bible.
Simply raising questions about the Origin of the Species seems to mean that you are saying 'God doesn't exist and the bible is a pack of lies', which is a blatant generalisation. There is strong scientific and cultural evidence for things mentioned in the Bible, such as the Great Flood, the 7 plagues of Egypt etc, but simply because science can show how it could happen naturally does not preclude God, after all, is not God the ultimate natural force to those who believe in Him in whatever form?
There are other things that simple common sense, when applied, are genuinely silly, Moses spending 40 years walking across a desert you can cross in less than 6 months etc, which either suggest a mistake, or that Moses' sense of direction was about as good as mine. But people still cling onto them, as though letting go of one tiny inconsistency would bring the entire house of cards down. I cannot define that as being secure in a faith.
Evolution is not about disproving the existence of God, it's nothing to do with Him, it is simply the product of observed results and study. Darwin made some whopping mistakes, which are only now coming to light, Evolution is a massively complex process, and it's transmission wasn't help by the phrase 'Survival of the Fittest' which is a phrase Darwin never ever uttered, it was a reporter who coined it.
The study of evolution is evolving itself, it grows and learns from it's mistakes and changes all the time, mistakes have been made, and corrected over time, and yet still the house is standing, that speaks volumes.