That is a good point. Although JWs are supposed to be family, that is only if you agree and follow 100%. As soon as you have doubts or issues, (and most do) it has to be hidden, which must be a major cause of stress.
My father finally left after a couple of decades. When I asked him why he left last time we talked about it he merely said "I couldn't do it anymore." It was such a simple response with so much behind it. I read it as he couldn't live a lie any longer so he left.
That stress you are referring to, JWFacts, is the reason why I didn't fade, but instead was open about my questions in regard to my family. They will never understand it, but I told them because I love them and didn't want to lie to them.
-Sab