I think it would be more appropriate to ask how "exciting" a bike might be.

As has been posted, the new bikes can be doing 100+ in a blink. I rode my buddies ZX12 years ago, ran it through 3 gears, and was doing 150mph, and it felt like 80mph. Really fast, but not exciting. I took a FI600 Honda on the race track, did everything beautifully, felt like Superman, but not exciting.
It's a double edged sward, these new bikes. First they are so good and easy to ride fast, not a lot of talent is needed to go fast. Second, kids are flying on them and crashing and killing themselves at crazy speeds.
Our generation had to deal with a lot of "aggravations". Like weak brakes, wobbly bikes, and engines that tended to stop spinning at the worst times. Solidified grease tires, and boingo suspension. We HAD to learn how to ride in bad conditions. A 30 mph corner, might has well been a 100 mph corner with these "variables", as far as excitement goes....
Fast is relative, at the road race track young guys think us old guys are crazy to go that fast on old bikes and skinny tires, they don't realize, it is just more "exciting"!
