In elementary school, one of my classmates was hit by a car on his bicycle. He must have been about 9. His head went through the windshield.
He was fine.
The windshield was not fine. His helmet was not fine. The teacher had him bring in his mangled helmet to show the whole class. Nobody had to tell us he’d be dead if it weren’t for the helmet. It was obvious.
I still remember this vividly 40 years later.
I wear a helmet.
Re this from @thomasfuchs:
https://hachyderm.io/@thomasfuchs/115364452251790863