I would agree that some of them have no point unless you're going to a track. For instance, you don't hit the power curve in first gear on a R1 until you've already broken the speed limit. It does about 100mph in first gear and the real power is in the top of the tach, so you don't get to it until you're doing 70mph +. A gearing change can fix that. A Liter plus bike with a wide torque band however does make a bit more sense. On a bike like that, it pulls like a bat out of hell at legal speeds too. I don't think the issue with super sports is the size of the engine. I would argue that the problem is the suspension. It's so refined that cornering becomes boring without extreme speeds. With that in mind, 600cc super sports are stupid for on street use also. I will mention that I do own a liter plus v-twin sports bike, I find it to be a really fun bike, and I thoroughly enjoy riding it. I find ample opportunities to lay down the 150 hp while riding on road, and I can even top out first gear without fear of going to jail. Although, the fact that the front wheel is off the ground all the way through first gear could get me a pretty good ticket for excessive use of power. On the flip side, I would never buy an Inline four liter plus bike for any purpose other than run it on a track because that would be pointless IMHO. Oh, and I get 40mpg + out of it so that would place me in the same mpg as most slow *** overgrown cruisers that can't get out of their own way. I would agree that to really push my bike to it's limits, I would need to go to a track, but it is a lot more fun that a 600cc super sport even when you don't. I also have to argue about "having more power than you need to get out of the way." When you're traveling at highway speeds, a smaller displacement bike needs 1 to 2 downshifts to really accelerate. a large displacement bike will pull hard enough to get out of the way without the shift. With that in mind, I haven't yet run into a situation where my 750cc (85hp) touring bike didn't have enough to get out of the way, but I have been in situations that required a downshift or two to prevent getting squished on the highway. Around town, the 750 is a rocket. I think it's a case of "to each his own", but there are more reasons other than to show off, to own a large displacement sport bike.