The worst hearing damage I suffered was a day in Non Lethal munitions training. I wasn't told what I was training for, and the course instructors neglected to ensure hearing protection was available. Major Fail.
That was the icing on the cake, I now have eternal ringing in my ears, and conversation in a busy retail environment makes me cup a hand around my ear and annoyingly ask some whispering customer "EH, WHAT'S THAT YOUR SAYING?" I swear I'm going to get an oil funnel and start using it. They WON'T speak up, and I really should get a hearing aid.
Got $3,000 handy? Can you afford $20-30 bucks in batteries over and over? I don't want to be unpleasant, but you need to wear hearing protection whether you like it or not, no matter how much discomfort it may seem to bring.
I won't point out those who refuse, lack the mental capacity to make a better decision. If they don't come to that conclusion later in life, they can't anyway. What we are trying to say is don't hurt yourself, humans capable of afteraction review do make different decisions, and are quite willing to point out they made a major mistake.
It's the ones who won't listen who let Darwinian theory become an actual force in their shortened life. Don't be that guy. Ask yourself, would you let yourself suffer accumulating damage to your eyes to the point you were legally blind by age 45? And yet, people will do that with their hearing. Ask any rock band player, or construction worker if he would change what they did. If they say no, you're not looking at a contributor to the future success of the human gene pool.
WEAR HEARING PROTECTION should be the first rule of firearms safety.