I was a reasonably regular helmet wearer, I would wear one on most trips, but would on occasion decide to not wear a helmet.  Since the judgement quoted, I have decided to become a definite helmet wearer.  I know this is a little bit sad and many will argue self defeating as it makes helmet usage more of 'the norm' supporting for the legal decision.  But from a personal perspective,  I do not want my family to lose out on any compensation due if a driver could find wriggle room in a court's decision.  I now wear a helmet all the time.