Why not contemporary Christian music?

Here's why not. Gene Helsel explains:

Modern Worship and Madison Avenue

Almost a year ago I attended a pastors's conference where it was asserted that the problem with modern worship music was neither it's newness nor the instruments used to accompany the singing of God's people. Rather, it was asserted, the primary problem with modern worship music was it's striking similarity to the jingles produced by the advertisement gurus on Madison Avenue. After watching the video below, I realized that Tim Hawkins most likely reached the same conclusion, not theologically or philosophically, but rather, just musically. Enjoy/Weep.