Money (not theirs personally), power, privilege, adulation, self glorification, perks like traveling around the world paid for by the WTS, complete health and dental care, are just some of the things the GB men of he JWS acquire when they become a GB member.
Nice gig if you can get it, particularly for men who are elderly.
But as its been noted by talks by Gerrit Lösch you have be totally corrupt and dishonest in propagating the WTS/JWS doctines