Grew up without a helmet, but always wear one now. END OF STORY.
Helmet saved a close friends life a few months back. He is an outstanding cyclist, and nobody knows how his wreck happened. Was on a mountain bike trail, not doing anything crazy, up ahead of a group out of sight a bit. CRASH! Nobody saw it, and his concussion wiped the day away for him. Doc said it would have been easily fatal but for the helmet that shattered.
QT