I wouldn't celebrate Evolution Sunday, but I think this article offers us some insight. courant.com | Churches Exploring How We Got Here
I like this statement: "The real tragedy of the creationist movement is what it does to religion," said Eddins, pastor of the Asbury United Methodist Church. "To reduce the Bible to the status of a textbook is destructive to our relationship to God."
I think he is right in a sense. The Bible is not a textbook. It has history, but it is not a history book. It has science, but it is not a science book. The Bible is first and foremost a theological book that tells how God interacts with human beings and gives us everything we need to start and build a relationship with God.
To reject myth and story and parable as valid means to teach us about God is ridiculous. The problem they say takes place is "If one thing is not true, how do you know what is and is not true." Granted that is hard, but our belief in the message of the Bible really should have nothing to do with whether a particular story is absolutely true. We believe that the Bible is God's Word to us. As God's Word is has something to teach us about our relationship with God.
We too often think in terms of "truth." If the story is not "true" then it must be false. Instead of setting up a dichotomy of truth and fiction, why don't we simply ask, "What is God trying to teach us in this passage?" I think the answer to that question will have little to do with whether or not the story is fictional or not.