I believe there is little doubt that it is foolhardy to be in an automobile without wearing seatbelts, or to ride a motorcycle without wearing a helmet. Someone inevitably claims that it is better to be thrown clear of the wreckage than to be trapped inside. But ask any race car driver -- they who witness crashes all the time and may have even been in several -- if they would dare take to the track without making use of their extensive belting systems.
I believe it would be nice if we had the right to drive automobiles without wearing seatbelts, and to ride motorcycles without wearing helmets. These acts, while dangerous to the actor, don't pose any real threat to others. If the person who crashes into my car isn't wearing their seatbelt, it doesn't change my likelihood of injury to my body. It does, however, greatly increase the danger to my wallet, and that's where I draw the line.