Think what you must, but loud pipes saves lives. (oh boy here we go again) It's about safety, not being obnoxious(for me). When my wife or daughter is on the back, I want to be damn sure every cage withing 50 feet of me knows exactly where I am. I could give two shits if they think I'm an asshole for demanding that they pay attention to me.
Anyhow, my pipe is only ridiculously loud over 8000+ rpm. When splitting a lower speeds its a perfect rumble. I've never had a close call splitting lanes on my 750. I used to have them all the time on my wife's 250, because no one can hear it.