Science is wedded, at least in principle, to the evidence. Creationism is unabashedly wedded to doctrine, as evidenced by the statements of belief required by various creationist organizations and the professions of faith made by individual creationists. Because creationism is first and foremost a matter of Biblical faith, evidence from the natural world can only be of secondary importance. Authoritarian systems like creationism tend to instill in their adherents a peculiar view of truth.
This is from the Talk-Origins archive. Notice something about this argument: that ir presupposes a difference between proper and improper ways of getting the truth. Some methods are superior to others. "Works for me" isn't good enough in this arena of inquiry; genuine standards of right and wrong reasoning have to be applied.