Not too loud on a dessert highway is different from riding in the suburbs. Sound is a wave, if it has nothing to bounce off (the desert) it may not seem too loud. If there are houses, buildings and trees around, its a different story.
I just wish the gov't would let cars/bikes be a little louder so they could tune the exhaust for just a little more volume and better tonal quality. Then, perhaps, fewer people would feel the need to get loud pipes. Just my 2 cents.
"ride more, worry less"
2005 Suzuki GSXR1000 (slightly bent) - Track
2000 Honda VFR800 - Street