The fellow who was (past tense) my best friend has been a JW since he was about twelve years old. He is the same age as I am, 64.
We've had many conversations since I left in 1979. Over the years he has pretty much described his state of mind. While never admitting
the Organization isn't the TRUTH, he has made it clear his disillusionment.
1.Doctinral changes trouble him, disgust him and embarass him.
2.He has come to see the "problem" with the blood doctrine.
3.He threatens to leave if they ever set a date again.
4.He thinks the meetings are boring and the elders are under educated dolts for the most part.
5.He thinks the elders often get things wrong (judicial pronouncements.)
However, he also still believes that no matter how wrong the earthly servants get things JEHOVAH WILL STRAIGHTEN IT ALL OUT EVENTUALLY.
He has stated there is no place else to go.
He feels the doctrines on Hell, the soul, the Trinity are true inside the Organization.
But, top of his list, it is the PREACHING WORK that convinces him he needs to stay because ONLY JW's do this.
His contempt for Apostates is palpable.
He still loves me and our friendship will never leave his heart---but, he is deeply conflicted and cannot risk losing his life by continuing to have anything
to do with me.
He has always lived a double life. He goes to movies he shouldn't, reads books that are forbidden and thinks for himself. But, he is deeply and profoundly
driven by FAITH in the Watchtower society.
Now this is the reverse side of the question asked in the Opening Paragraph, but, I think it demonstrates the answer from another angle.
CONFLICTED BELIEF holds many people. That and fear of dying at Armageddon. Core family bonds are threatened by any thought of leaving.
It can be summed up by saying IT IS A HOSTAGE SITUATION.