As others have mentioned, there's a lot more to this type of question than might meet the eye.
"Did being in prison do anything positive for you?" "Yes, it provided me three square meals a day."
Obviously, there's more to it than that.
There were some positive aspects of being raised a JW. My family fit the demographic profile of most recently-converted JWs in Texas: recent immigrants, lonely, poorly-educated, naive. We lived in a gang-infested area of town. My mom took the JW teachings to heart and became a Nazi about my not having friendships with "worldly" kids.
It's possible I would have otherwise gotten caught up in the wrong crowd and made some mistakes that would have permanently affected the trajectory of my life (criminal activity, getting a girl pregnant in my teens, etc.). It's impossible to know for certain.
Better questions to ask, though, are: On balance was the JW experience a positive one or a negative one? Might my parents have found more productive ways to insulate me from the dangers of growing up poor?
The fact that there might have been some positive aspects to JW life doesn't tell us much in and of itself.