It sets up another hurdle for a child molester to jump over. Most molesters will avoid it and go elsewhere. The Boy Scouts, the public schools, and day care centers have all instituted Child Safety Programs. It protects the church in case of a lawsuit. A decision against a church will mean the end of a good reputation.
Financial judgments can also mean the end of a church's ministry.
It's a great way for Satan to devastate a good church. A key component of any Child Safety Program is education. The mere process of having a program and going through the program educates. We protect them. We think child ministry is significant, so significant that we let only the most qualified individuals work with our children.