1972: dad stops station wagon a little too suddenly while I'm sitting in the back, causing me to go sliding into a fan. Eyebrow scarred for life. Wasn't wearing a helmet.
1974: playground mishap in which my head meets the concrete, resulting in an awesome goose egg. Wasn't wearing a helmet.
1976: fall 20 feet out of a tree. Break two teeth and puncture an eardrum. Wasn't wearing a helmet.
1988: hit by a car as a pedestrian while on a crosswalk. Knocked unconscious. Wasn't wearing a helmet.
1992: driving a car when another car rams into mine. Smash my head into the windscreen. Knocked unconscious. Wasn't wearing a helmet.
2001: walk into a lamp post while deep in conversation. Bong! Wasn't wearing a helmet.
2005: catapulted over the handlebars after hitting a pothole late one night. Knocked unconscious. Wasn't wearing a helmet.
If there had been news accounts of these incidents, my lack of a helmet only would've been mentioned once.
Cycling isn't dangerous. Life is.
(One could argue I should be wearing a helmet all the time. I would only suggest that the skull appears to be up to its job.)