My daughter claims she never believed it, but the JW's visited her often, so that was her motivation.
I think there are a lot of JW's who are in it for that reason. It's their only social network. And frankly, most JW's are sincere and kind people. (Sure some are a$$holes, esp the pompous ass big shots who love the power and limelight.)
My elderly mother has begun to have a lot of doubts. She has come to realize she is not going to live forever. That was a lie. She is aware of all the child abuse issues and has mostly stopped contributing as she doesn't want her money to cover those lawsuits (and because she has given plenty in her lifetime). But I would hate for her to leave The Truth™ now. It is her "everything". Her friends are there (at least the ones not in the cemetery). The young families/people really cater to her and even offer assistance as she has been decades in that Cong and fortunately she is not a cranky old bitch.