I agree. I think in part the constant reminder that "not everyone in the hall is good association", and the you better turn people in if they do something talk has put a damper on getting close to each other. Plus I don't know about you, but so much of the meetings is negative, all about what you are doing that will make god mad at you, and how horrible everyone is, and don't go outside because your neighbors are going to rape then murder you.
Plus the majority of jws are poor and need every bit of extra energy to eek out a living. Who has time or energy to go out of there way to associate - its easier to watch TV and not have that pressure.