I once had a conversation with my dad where he was saying that even if they do bad things, we must follow the Organisation. The reasoning behind this is that the Jews were selected by God and had to remain Jews despite their evil priests and kings. Likewise, the JWs are selected by God and we need to stay in the arc, good or bad.
I then told him: The Jews were selected by blood, by their race. Later on, they were rejected as a whole for their actions. Today, God's people is to be identified by its actions. Thus, we have no other option but to analyse the actions of our religion, the good and the bad and make our informed decision. Wouldn't it be possible for a good religion to go bad? Isn't it exactly what happened with the Jews? Isn't it exactly what happened to the first Christians? Why could it NOT happen to the JWs?