I would not ever want to fire a weapon without hearing protection and certainly not inside a home. Of course in a SD situation, you just gotta do what ya gotta do. I do have a pair of 33bd muffs ontop of my gunbox in the bedroom. Will I use them if a intruder is in my home? maybe. I have them there so I can make that decision when it happens. I do know that while wearing them in a quiet home, I can hear normal sounds perfectly well.
As far as auditory eclusion goes.. I tend to believe in it.
Life is a web woven by necessity and chance...