Originally Posted by Six jours

The question is whether helmets are effective at preventing serious brain trauma and death, and so far, the answer appears to be "Doesn't look like it".

Of course, the most obvious answer seems to me to be "I wear a helmet while cycling because my personal assessment of the risk to me warrants wearing one. I have no quarrel with anyone whose risk assessment differs from mine". Why we need to put any further effort into the debate is somewhat mystifying to me.