It never ceases to amaze me the amount of people that insist on riding without helmets, even where it's posted that they are mandatory. Unfortunately, they are the ones that get hurt and pull out the attorney card, sue somebody and the trails get closed. There's a guy that I know up the that rides just road bikes and lets his 7 year old girl ride all the time without a helmet. I mentioned it to him and he said she just rides up and down the street. There's not that much traffic on the street but most of the drivers don't pay attention too much, even to a little 7 year old which is unpredictable. He should know better as a roadie as a flat can put you down immediately, I just hope nothing happens to her. I wear mine most of the time with the exceptions being right after servicing the bike and checking adjustments. That even bit me in the butt one day! I was riding in the street in front of the house after working on the bike. The kids were playing basketball and here comes me with no shirt, shorts and clip-flops on. Rode by, grabbed the ball and started dribbling while riding with no hands ( should have known better ), the ball got behind me a little and as I twisted to get the ball forward I went down. Not very fast, 10mph or less, on my left side still clipped in sliding along on my shoulder and head. I could hear my hair shredding off along the pavement. All in all I wasn't hurt bad, but it scared my Daughter, and I had alittle road rash and thin spot on the side of my head. Never did come unclipped, and of course the first thing I did when I got up was to see if anyone was watching. How embarrasing, should've known better!