To me it is hearing protection. Especially at the range when some AH with a ported magnum moves in next to you. In Europe it is considered impolite to not use a suppressor and the are available over the counter with no extra fees.
Patron Member NRA
"I would not be an old man if I had not been an armed young man." JTJ
I was taught to respect my elders but they are getting harder to find.
Make sure when you purchase one, you get the right one, Mine is a Torch from Liberty, a 223 can, also use it on a 17HMR, 22Mag, 6x45 and 243 win, all no louder than a unsuppresed 22lr, think of a 9mm can will also work on 35 cal. rifle as well as pistols, works great on 300 Blackout too.