Everyone has pretty much just nailed it. Cognitive dissonance at its core. Reminds me of my father in law. The man has been a witness for 30 years. He quit his job 20 years ago and claimed disability. He won't admit it (because it would be admitting fraud...basically) but the reason he did so was so that he could give his all to Jehovah as the system winds down. He has poured his heart and soul into this religion. He has spent tens of thousands of dollars he didn't have trying to give to the organization and help others out. He runs himself into the ground (health-wise) going out in service....making shepherding calls.....being on hospital visitation committees.....being on the RBCs etc etc. He is far past the point of no return. If God himself visited the man and told him the organziation was nothing more than a cult......he would say that it must have been Satan posing as God. At this point in his life (mid 60s) he simply HAS to believe. He has no retirement. He won't be able to afford his house payment once the disability $ runs out.......he has given EVERYTHING to this damned organization. Believing (for him) is not an option.
I feel sorry for him.....yet I loathe him. This is the same man that bombards my wife with daily "encouragement" to stay "strong in the faith".