Oh I love the feel of the wind in my hair while riding my bike without a helmet. No one has the right to tell me I can not do that. But I like my head without any modifications, so I always wear a helmet. With the Touring bike I wear a half helmet. With the Cruiser in Florida I wear a 3/4. With the Dirt bike, Sky and I wear full face helmets.
Sky just got back from Mt Aleyeska. A week of Mountain Biking with friends down the mountain, on the ski slopes. Tram to the top of the mountain then a differant trail each time to the bottom. (Death wish in my view). He wore a full face helmet and is real glad he had one on each time he crashed. The bar across his chin is full of bad abrasions, he said the first one could have been his chin. Without that full face, that one fall would have ended their week long trip. The other guys also took falls where their chin bars took significant damage. They were also wearing boots, shin guards, gloves, knee pads, elbow pads, shoulder pads, and chest protectors. The new Mt Bike is a lot worse for the wear. Needs a new rear wheel, crank, right brake lever, and brake pads.