This is a tough one because there were many good experiences growing up. Usually social stuff like everyone else - I could never claim that there was never any laughter. Also I remember when I was five and my parents got divorced, we were homeless for well over a year (I think it might even have been two years) and various families willingly let us live with them for varying time periods. I also feel the bible-based upbringing made me a better person than I would otherwise have been - I have always had a bit of a "good-time rebel" streak and I do think the way I was raised made me more considerate and sensitive to other people's feelings. I enjoyed being a MS because I really felt I was helping people at the time and it made me feel better about myself for the first time in my life.
But aside from the individual experiences, I can't say that I was happy overall. Despite the social scene, being a JW is/was a lonely experience. I always felt like a fraud - I didn't connect with the "spiritual superstars" and felt guilty for not being that way inclined myself. I hated assemblies and large congregation "get togethers" (you know the ones that involved hiring the local village hall and everybody doing country dancing lol - I wanted to go clubbing hehe).
In summary I guess I feel pretty neutral with nothing to be particularly bitter about. I still believe that most JWs I knew/know have good intentions. And I'm in a good place now and maybe I wouldn't have reached this point if I hadn't spent most of my life feeling guilty and brainwashed hehe.