I have a different slant on this subject.
I have prepared a will so that my children will have little problem when my wife and I pass on. Unfortunately, one daughter has joined the JW and by all indications is deeply imbedded in their beliefs. As one would expect, she has little love for her parents and acts accordingly. She devotes all her life and finances to the Watchtower. This includes working at the Patterson facility for next to no remuneration and as far as I can tell, no provision for retirement. I guess she bought the propaganda that Armageddon will happen before too long.
With the feelings I have for the Watchtower I am certain she would possibly pass on any inheritance she would receive from us to her husband and the Watchtower. This displeases me and my wife no end. As a result, we felt obligated to exclude her from our will. Believe me this is just about the hardest decision I have made in a long time.