I don't disagree, it's great to know people like what you have, but how many people actually take notice beyond 'what's that noise?' and how many is it just your mind wanting to think people are going 'wow'?
Loads! Until you've ridden a bike you won't really get it. Loads of people who don't ride bikes secretly or not so secretly want one, and you can spot them when you're riding.
Bikes are amazing and attract a lot of looks, either out of admiration, lust, or jealousy. And that's not me showing off, people just like them. Especially sportsbikes that are V-twins. They sound unusual and fantastic, and they mostly look amazing too.
My Z750 was loud and looked cool. People would turn and have a proper look.
The Fazer had an Akropovic on it, so sounded great, but people barely batted an eye. If they did turn to look, they'd soon decide they shouldn't have bothered. It was sort of handsome, I suppose, but in an understated, plain way.
The RSV had the stock exhaust on it for most of the time I had it. Once people saw it they would just plain old stare at it. It was absolutely beautiful. It was a staggeringly gorgeous piece of Italian engineering.
When it had the race pipe on it, it lasted about four days of me being embarrassed because I'd try to filter and people would **** theirselves as I approached and every time I went past a copper (which was about twice) I was mortally afraid of being pulled over. Way too loud. As standard though it just sounded really really very nice indeed without being offensive.