The Bible teaches that those who earnestly seek God will find Him and that He is not far from each one of us. When we do find him, we become acutely aware of our shortcomings.
Churches this day and time put way too much emphasis on putting bodies in the pews, entertaining them, and carrying on as if it were a social club.
Being a Christian is about growing in grace and understanding and serving God and fellow man. That is a far cry from what is happening in most churches today.
As long as the message is preached and preached correctly, I have no problem with entertaining people. In part, b/c "entertaining" won't be the church's soul purpose. It will be to worship. Whether that be with an electric guitar or piano as long as that purpose is Christ then a church will flourish. Once you start watering down the message and focus soley on Music, Presentation of Sermon, Aestetics of church, then you run into issues.