I always wear one when we go to the local amusement park, or to the State Fair. Also, those long days of shopping. I can toss license, checkbook (so does anyone still use those??), credit card, lipstick, powder and the all-important aspirin/advil, and be done with it. I carried a backpack along with it to the State Fair today, but that's because I can carry plenty of drinks in and not spend $30 for cokes!