It seems we have some common experience.
Even in my "good old days", when hearing loss was a problem only others had, it was noticeable that those with hearing loss tended to speak louder than needed - the louder the background noise, like in a crowded restaurant, the louder they would speak and probably annoying other guests on neighboring tables.
In the last few years, my own hearing was rapidly deteriorating, and my wife would frequently signal too me, or tell me to speak lower. The same would sometime happen when both of us were talking at the dinner table - no distracting TV sound or music in the background.
Only recently, I was diagnosed with hyperacusis which making everything sound too loud. My own voice and anyone talking to me sounded annoyingly loud making my word speech and recognition very poor. Banging a plate in the kitchen sink could be painful. Hearing tests had very poor results. For instance, my latest AzBio Sentence Hearing Test at 65% noise showed only 6% out of 159 words in 20 sentences correct (Soon I will get a cochlea implant and I hope it will significantly improve my hearing and minimize or elimintate hyperacusis).
Therefore, others who have good hearing often don't realize how much hearing loss can affect the quality of life of hearing impaired.
The Hearing Tracker Forum posted a very interesting discussion by Steve Klinger about it:
http://www.hearingtracker.com/opinion/what-i-wish-people-with-normal-hearing-understood-about-hearing-loss
I have given it to others with good hearing so they might gain an understanding about it.