My parents have been witnesses since childhood, they're now in their seventies. They both left the org for about ten years but my mother started attending again after some family illness, she needed something to help her cope. She started going back to meetings on her own and my dad sat at home alone for a year and then joined her.
I've told them about some of the things I've discovered about the society, they explained it away as apostate lies. However my dad let it slip that he had gone online to see what I was talking about. They also say that it's the best of a bad bunch.
I really feel that they love their circle in the cong, they'd be pretty lost without it, they don't shun me (not for a long time). So it's a case of each to his own.
Best wishes
D