06 R6 - 5900 miles
06 Hayabusa - 392 miles
00 Silverado 132,000
75 super beetle - ?? on the body, 60k on the engine
98 EX250 - 19,000, bought it with 13k
90 GMC Sierra - 346,000
93 Mazda b2200 - 220,000
97 VFR - 32,000
74 Honda CB 360 - 47,000
78 CB 750 - 89,000
Last three are my dads commuting bikes he had when we lived in the bay area. The 750 got 69,000 miles on it before he put a new motor in it, motor wasn't bad, but he came across a fresh one for cheap. Put another 20k on before he sold it.
Like everyone is saying, anything will last as long as it's taken care of. I proved that with my first truck, 350k miles on a GM 4.3 V6 is pretty damn good, but I took care of it, you tend to do that with things that you've invested your money into. Well, people should at least, some people just don't care.
I agree that most sportbikes don't see 10k miles, but I've always been a believer in taking care of things that cost me money, but when you don't have that much money you tend to have that attitude.