I'm not a fan of straight pipes. When I rode, I liked a little noise, and can see the appeal, but I have a new perspective now that I have had children.
Talk about pissed.........try rocking and singing to the little one for an hour to get them to sleep, only to have some dude who thinks his bike is God's gift to eardrums drive by your home blasting away.
My dad does it all the time........pisses me off.