I'm sorry, but Christian music does suck. I don't mean music performed by members of the Christian religion, but music that in and of itself is christian. When a band releases a CD and all 12 songs talk about thier relationships with god or jesus, it is repetitive and uninteresting. As a whole, the genre of "christian music" is limited to bands that releases CDs like that. The lack of creativity and repetitiveness of the lyrics sucks, and bands that are comfortable to fit into that role typically suck, too.
Bands like P.O.D. and MxPx do not play Christian music, regardless of the faith of thier members.