Not all evangelicals would appreciate this blogger's views but I think that there is enough truth in it to consider seriously:
The world for many evangelicals is basically black and white. But art is all about the gray, and herein lies the source of the difficulty: how can an evangelical really appreciate art when the evangelical posture toward the world is one that is anti-aesthetic? Evangelicals see things in terms of propositional and moral truth; but art is not primarily concerned with the propositional and/or the moral. Art is not teaching by a different means. If we think of the classic transcendentals, evangelicals are perfectly at home with Truth and the Good—with logic and action—but not with Beauty.