The watchtower squeezes out anything interesting out of its followers. What is left are drones who have a single purpose - "Advertise, Adevertise, Advertise the King and its Kingdom." Actually, not really, the purpose is to get enough hours on your time card so no elder comes a-knocking.
I think that the Watchtower in the 1950s and 1960s were interesting. I am not sure at what point they turned into drones, but they did.