If you say you havent gotten anything positive out of being a witness or being associated with them, you either havent paid attention or might not have the fortitude or intelligence to make your own desicions or learn from ANYTHING.
for me? I view the witnesses like a school I graduated from. Public speaking, check. Talking to strangers about controversial subjects, check. Learning about the Bible, check (and then learning more after my association with the witnesses). Getting a decent work ethic, check. Staying out of politics, (even though it is in doubt the org itself did) check. Paying attention to history and world events, check. Travelling around the States, Canada, and mexico, check. Learning what a cult is like, check. Being able to develop friendships WITHOUT conditions (unlike the witnesses) check. Becoming closer to my family due to the witnesses (in my area) speaking of the importance of keeping contact with "worldly" relatives, check.
It was an experience i would trade for nothing. Of course, i seem to have been more "free" than most people here, and able to make my own decisions, unlike apparently some of the others here, who insist they were FORCED not to go to school, date a worldly girl, etc...