Walk up to any motorcyclist on the street and ask why they removed their perfectly good, stock motorcycle exhaust system and replaced it with ‘loud pipes,’ and you will hear a resounding, “What..?! I can't hear you over the sound of my bike!” Because, while there may seemingly be some “debate” over whether or not ‘Loud pipes save lives,’ there is no denying that their apologists are just a bunch of inconsiderate attention-whores.
Now, I'm a live-and-let-live kind of guy, and I live my life by one moral imperative: Do anything you want as long as it's consensual, and doesn't infringe on the rights of others.
It's a simple, elegant and decidedly dogma-free maxim by which to live—I highly recommend it to everyone, particularly hard-line conservatives and religious fundamentalists. If you want to wear only swim-fins and sing opera music, go ahead. Just don't do it where I have to hear it.