I am constantly amazed at how many people don't make their kids aware of and even expose them to the dangers life presents. Most disturbing to me is the kids playing or riding bicycles, tricycles, skateboards, etc on residential streets and totally oblivious to traffic. Then there's the joggers pushing carts containing infants going right down the middle of the road. They may be legally in the right but if a drunk or young driver with his foot in it comes along they are still dead. My dad was constantly on me about situations were you may only get one mistake...on the street, in the water, handling a gun, around electricity.
That said, ear and eye protection is something most of us had to be told about. I learned about guns in the 50's and 60's and nobody wore eye and ear protection when shooting. It was painfully loud but if you could handle it what the heck. My first use of ear protection was when I took a job grinding welds nine hours a day in my late teens. It hurt my ears so I wadded up some kleenex and stuffed them into my ears. I was amazed how much more pleasant the day became. They didn't tell you about such things back then.
Maybe those folks were just ignorant. Human nature is to think that if it doesn't hurt too bad we aren't being damaged.