I shoot without hearing protection when doing self defense drills with my 357 magnum, 22LR, 40sw, and 12 gauge every once and a while. Chances are, bad guys wont wait for me to put in my ear plugs before I have to defend myself. I personally think one should be comfortable with the loudness.
Wow. Seems akin to slicing yourself up just in case your home invader has a knife so you can know what it feels like.
As was said, when it's gone, it's gone. Don't help it along. You can complain about how loud it was afterward
if you're lucky.