The worst thing about the JWs is the amount of trust they put in their fellow witnesses and the GB. Before any would argue with this, think about the child abuse issues that is going on, and being exposed. When the higher ups say shun, the members don't bother asking why, they just do.
As far as the amount of trust, my husband personally of a case where a brother was waking and he got picked up by another brother. The brother who was driving the car was murdered by the one he picked up. When the authorities caught the murder, the reason was because he wanted the car. There are a few other cases, but I won't bother talking about those, all involving current JWs at the time of the crime.