We have an interesting article from Yahoo news about why teens are leaving church.
In summary
-They hear people elsewhere saying how judgmental Christianity is and how the Bible should be taboo
-They want to know how the Bible is relevant to people today (not just Bible stories)
-They don’t know basic apologetics (why the Bible is true). Also from the Christian post an article saying how most people cannot defend their faith. Josh Mcdowell is one of the most well known apologists, especially for his books on Evidence that demands a verdict . I first heard about Lewis’s trilemma from his work. Here is a long article on the Bible’s proofs
-Lack of racial unity/integration
-Lack of a blend of contemporary music with traditional hymns (another link if you’re interested in this issue)
-Parents expecting the church to teach their children what they should be teaching them
-Too busy
Something else that is not mentioned but I’ve heard from Bro. David Cloud is that the general worldliness of Christians today makes Christianity somewhat of a game or charity, rather than a real lifestyle or spiritual battle