I agree that fear is the prime motivator. But there are others who are comfortable with that way of life. A lot of witnesses have it pretty easy. One friend of mine was an M.S. because his father was an elder. He went out in service maybe 20 minutes on a good month. He counted his time because he had a daughter and assumed she was reading her "My Book of Bible Stories" while he watched hockey games. He never had to graduate school, never had to look for a job, place to live... all that was taken care of by the congregation. Had no bloody idea about the contents of the Bible and didn't really care. He was raised in it and the thought of leaving it or doing any extra research was completely remote to him. He admitted to me once that he didn't even really believe it, but it's just "what you do". I think there are many like him out there. Not to pat ourselves on the back, but I feel that most JWD posters are very intelligent and courageous people that just weren't content to sit and be fed the same line of B.S. week after week. A lot of dubs are just lazy; intellectually and otherwise.
FBF