Don't follow in our foot steps in becoming deaf, blind and even worse.
I don't want to be a nag - BUT a common effect of unprotected exposure to gunfire is chronic subjective tinnitus. Subjective Tinnitus is the perception of a constant noise when none exists.
It's often a perceived as ringing sound, or a hissing or roaring noise. Severe cases have been known to motivate people to suicide. It's really not something that you want to deal with.
I'd actually developed this as the result of repeated ear infections as a kid. Fortunately I was young enough that I was able to learn to block it mentally. But if I'm sedated (e.g. drunk, given pain killers, or near sleep) it comes back. And when it does, it's very difficult to think.
So the moral of my story is, just wear ear protection - otherwise you'll go crazy and want to kill yourself