Why Don t the Dutch Wear Helmets

After visiting the Netherlands recently I noticed an interesting phenomenon. It seems the Dutch don t wear bike helmets. I learned that under 1 of cyclists use helmets. I also learned that overall injuries to cyclists are way less than any place in the world, so what gives From what I gathered, cyclists and drivers are more experienced and courteous and the roads are engineered to keep all road users. This includes bike infrastructure throughout the country.