I agree with what Cyberjesus said. The not knowing isn't the problem. The thinking that you have to know is the problem. I believe the desire to know the answer to "the big question" is part of the egos need to be right. One of the coolest things that happened to me when I left the JWs was that I lost my desire have all the answers. I still had beliefs but they were alway evolving and subject to change.
I think you should just enjoy the journey and not worry about having all the answers and being right.