There are some very honest good people that are faithful to Jehovah and that is basically it, many do all these things like, meetings, witnessing, studies and so on because they really love Jehovah and believe it is the truth, some are institutionalised and others are just living a double life whatever.
The big test will seperate those that are in it for themselves or the WTBTS or those that truly love Jehovah and will be faithful regardless, just because the org or the GB appear to be currupt, it doesn't make all Jehovahs people that way, nor does it make the entire org that way. If people really know their bible they will see that very difference as even Jesus said about the wicked slave and faithful slave residing together until the master comes and throws the wicked slave out, many in the org because of the erroneous teachings of the WTS think that has already happened, but those that have studied the bible know that is yet to happen, those faithful to Jehovah are waiting.
Weather that is living in a comfort zone for some yest for some no and for others they dont really care.