I believe I can shed some light on why science and evolution is such a bad thing for (some) creationists.
Non-fundies have it made, argument-wise. They have a thing called "faith", which seems to (in their eyes) transcend everything that atheists take for granted as real, rational or logical. Faith replaces proof, and therefore no argument can touch these guys. No matter what you say, it's an automatic tie. Science is generally ok with non-fundies, because their beliefs are not tethered to such concepts as proof or reason.
Then there's the fundy. A fundy believes in the literal truth of the bible, often to the extent of believing that the earth came to be in 6 literal days. A fundy doesn't have "faith" like a non-fundy does, and therefore they can be touched with logic, which is why the believer who gets angriest during a debate is usually a fundy, because a successful argument against their beliefs makes them very uncomfortable.
One thing common to both groups, in fact all religions that I know of, is the all-or-nothing nature of the claim being made. If one little piece of that puzzle doesn't fit, then the whole thing disintegrates.
