Folks that have not pursued adventure are not going to understand the value he got from this. You try to take precautions, but if you push the envelope, the raven will always be on your shoulder. Many think it is this thrill that attracts people like John, but they are wrong. Only a foolish person courts risk for it's own sake, and that is not case here. It is the need to see what you can accomplish using skill in the face of pressure.
Safety can, and perhaps should, be regulated in our day-to-day world. Speed limits are good and I'd hate to get hurt going to get a gallon of milk. But I would hate a world where pushing yourself was illegal.