[krab]

For the record, I do wear a helmet on a racetrack in a car. :-) It adds major inconvenience, but the general risk on a racetrack is greater because you're pushing the vehicle to its limits.

The risk/inconvenience ratio seems OK for me when driving a car without a helmet but not for biking without a helmet. I'm not advocating for mandatory helmets. But I would feel very uncomfortable if they would be banned.