I've skied in Austria for the past 15 years and never wore a helmet for the first 8 years. I now have my own helmet. And I made sure it even has MIPS. You can

I've skied in Austria for the past 15 years and never wore a helmet for the first 8 years. I now have my own helmet. And I made sure it even has MIPS. You can be as cautious as you want and never make a mistake, but if someone else skies into you you could still smash your head very hard. That's why you should wear a helmet. Not because of your own capabilities, but because of the capabilities of the people around you and the risk just being too high. I wouldn't wear a helmet while cycling though. It's quite safe in The Netherlands.