I always felt intuitively that the doctrine was incredibly strict.
I would look at nature (human and animal) and see such a relaxed and accepting way about things. It was always hard to rationalize that the Creator of that was the same one originating all the harsh and exacting rules of the Org.
That was the biggest problem for me. Such a contrast. It seemed there were two different personalities, from the way life appeared and the way JWs described God and what he wanted from mankind, with all the attention to little tiny rules.