I'd love to see it mandatory. I live in the forest with an abundant amount of game, from turkey to deer and everything in between, the shots going off tend to get tedious like a lib whining.
Anything to take the crack out of the bang is a good thing. I also have hearing loss from my time in the army.
When you think about it, it's ludicrous why anyone would be against deadening noise, we have mufflers for cars...