I don't hear loud pipes like maybe I did 10 years ago. Owned a few Harleys with loud exhaust, and besides hurting my ears, no one would ride beside or behind me, for all the noise. My current Dyna has stock exhaust, and is quiet enough to pass all EPA and local regulations. My ears don't hurt and my head doesn't ache after a ride, and I'm good with that.
What drives me crazy are the squids on supersports with open exhaust, especially 600cc 4 cylinder ones. Very aggrivating, especially when they are red lining every gear. It is kinda funny when they miss a shift, because everyone in a half mile radius hears it...