I remember reading a post titled "Science as Attire," which struck me as making a very good point along these lines. It could be what you're looking for.
As a related point, it seems to me that people who do understand evolution (and generally have a strong background in math and natural sciences) are on average heavily biased in their treatment of creationism, in at least two important ways. First, as per the point made in the above linked post, they don't stop to think that the great majority of folks who do believe in evolution don't actually have any better understanding of it than creationists. (In fact, I would say that the best informed creationists I've read, despite the biases that lead them towards their ultimate conclusions, have a much better understanding of evolution than, say, a typical journalist who will attack them as ignorant.) Second, they tend to way overestimate the significance of the phenomenon. Honestly, if I were to write down a list of widespread delusions sorted by the practical dangers they pose, creationism probably wouldn't make the top fifty.
I'm extremely curious to hear both your list and JoshuaZ's list of the top 20 or so most harmful delusions. Feel free to sort by category (1-4, 5-10, 11-20, etc.) rather than rank in individual order.
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