I think it's important to remember that most 'faithful' JWs are defending, not a religion, but a choice; their choice.
Their choice to become a Jehovah's Witness in the face of opposition from family members, even their own marriage mate.
Their choice to believe that the 'creator's promise' would be fufilled within a generation of 1914.
Their choice to carry a 'no blood' card.
Their choice to quash feelings of deep discomfort when studying the Revelation..Climax book.
Their choice to accept that Jesus isn't their mediator.
Their choice not to go to college and to discourage their offspring from going to college.
Their choice to refuse that job promotion.
Their choice to stick with a religion when their 'unbelieving' mate leaves them.
Their choice to shun their child who, as an adult, gets disfellowshipped for no longer believing 1914.