There is an interesting editorial by Marty Fields, pastor of Westminster Presbyterian Church concerning the failure of the church growth movement. I found one particular paragraph particularly insightful.
Very simply they made secular people even more secular. Rather than leading people to worship Christ they led them deeper into worshipping themselves. This should be no surprise: if you gear a church towards the consumer preferences of a fallen culture you will produce a fallen church. Why would anyone think that catering to man’s fundamental sin problem would do otherwise? Liberals say there is no sin, and church growth says sin is no big deal. The very heart of the gospel tells us otherwise: sin is real and its the main problem we must address. Any church that fails to address this will fail too.