Don't people realize they can private message eachother. I guess some people get off when people watch.
But yes, I completely agree, most of the UPS trucks are causing hearing loss to drivers. Don't kid your self, thinking it's just because you are getting older, that you can't hear things very good anymore.
Earplugs will definitly help, but then again, you may not hear that car honking at you before you crash into it.