You can be the best snowboarder in the world, but it is more about the people behind you. I know this guy who was slammed head on by a skier, went to the emergency room and the only reason he survived was because he was wearing a helmet. I really don't think I would hurt myself, but to protect myself from other riders.
Precisely why you ride faster then everyone else, just have to worry about not running into people
PowderHound and TreeNinja