Every religion that includes a creator is threatened by evolution, but Christianity is especially threatened. I once read an interview with a creationist (he actually ran a creationist museum). He said he can't believe in evolution, because if evolution is true, then Adam and Eve didn't exist as such. If they didn't exist, then they didn't eat the forbidden fruit and get kicked out of the Garden of Eden. If there was no fall from grace, there was no Original Sin. And then Christ's sacrifice is meaningless.
I can't fault the guy's logic. Evolution directly contradicts the central tenet of Christianity. I guess it's just too bad for him that evolution is real.