I think when you are not allowed to be your true self, and are obsessed with pretending to be something you are not, there is no way a marriage could be fulfilling.
I am so glad that I didn't get married until after I left. I have been married for more than 15 years and love my husband more today than ever. We also are able to let each other grow and learn and change without the confines of a cult. I know I wouldn't have the opportunity to explore different interests if I had married a JW.