i remember the days growing up when no kid in their right mind wore a helmet while biking, or snowboarding, or sledding, or riding a sled behind a moving car at 2am, last I checked, we all survived....as far as wearing a safety orange or yellow/green/purple/etc vest while preflighting.....not sure i need that either, i always stay within the perimeter of the plane, shouldnt be any moving vehicles nearby minus the caterer and its hard to miss that one....granted im just a newbie crj pilot and dont have a ton of ramp experience, but i did spend 9 years flying for the navy and never once did i feel i needed a reflective vest on the ramp (non carrier based).