Get a bike with a nice exhaust, you'll understand.
Meh doubtful, I have my headphones on most of the time anyway with the volume low enough that I can hear the bike and my surroundings in a muted fashion so different exhaust wouldn't mean much to me.
Even off the bike it's rare I have my headphones off; having them on keeps people from doing silly things like trying to talk to me.
Also a side note, don't ride with anyone you meet downtown. They usually do stupid **** along the way. (Everything from filtering to going beyond 200kph)
Well I can't go 200 kph my max was 145 on highway once so I'm safe there but yeah I don't ride *with* anyone, I just follow a bit and observe, see if there's anything I can pick up but I stay within my limits.