My father's father was a printer - for decades. If that very-noisy job damaged his hearing, it didn't damage it enough to keep him from having normal conversations when he died in his 70s - and he never had a hearing aid.
Also think about this. If you ever have to defend yourself at home - probably with something a lot noisier than a .22 and probably in your small bedroom - do you want to jump out of your skin because it's the first time you ever fired a gun before without both plugs and muffs?