Yesterday, I forgot my helmet which I bring to work, so I can go out at lunch time for an hour on my road bike along country lanes. So, for the first time ever, I just put a cap on (for the rain), and went anyway. It was peeing down, I was with another rider, and I just went for it. Chris B got me thinking... and I felt that the overall risk to me was not dramatically decreased by me not having my helmet. Generally, as a rule, I prefer to wear a helmet and I will, my choice - but my previous instant outrage at non helmet wearing and wearers has now gone. I was wrong.