Are you suggesting "they wear out quick and cease to exist"? Some half modest model such as -96 ZX750 retails at $ 3,800 according to KBB. Buy an ok individual and you could clock in more miles than you do during the rest of your life.
Well not quite all people enjoying it all that much. There are some that have noticed that you really have to push it hard to beat that souped up 206 Peugeot in the lights. Well some people are happy enogh to put-put along, good for them.
The big H-D is a very nice, predictable and stable bike with low center of gravity. First bike I´ve had I´ve been able to comfortably ride without hands. Excellent in heavy traffic. Good torq down low. Looks good. Some negative points I can live with. But one that I can not: its bloody beeping time they put some power in it.
Because the new ones are so much better than the 10 year old one it's not worth it to keep them!
If you look at a bike like a EX500 that hasn't changed over the last 10 years you'll find more older ones. But all the real sport bikes are so much better than their 10 year old versions hardly anyone keeps them or wants them (hence they don't hold value well)
Where as HD's hardly change so the old ones are just about as good as the new ones and they're a lot more $$ than sport bikes so people tend to hold on to them much longer.
An EX500 is kinda similar - hardly any updates in 15+ years but it's a cheap bike ($5k new) compared to a HD but like HD they hold their value pretty well, better than the top of the line sport bikes.
If your buying a sport bike your buying it for it's performance, and in the last 20 years the hpr has almost doubled (in addition to all the other areas that have improved) so that's a BIG perfromance difference.
They're also very complicated so it can quickly become more worth while to buy a new one than do a rebuild on a 10 year old one.
Actually Bush Sr.. is not bad. He rightly called supply side economics Vodoo economics. Too bad W didn't listen to him and he thought going into Iraq was bad thing to do.."In explaining to Gulf War veterans why he chose not to pursue the war further, President Bush said, "Whose life would be on my hands as the commander-in-chief because I, unilaterally, went beyond the international law, went beyond the stated mission, and said we're going to show our macho? We're going into Baghdad. We're going to be an occupying power America in an Arab land with no allies at our side. It would have been disastrous."
Have you checked reliability, maintenance intervals, and the like? When was the last time you saw engines grenading like they used to do in the 80's? Heck, MY lap times keep getting faster on virtually stock bikes. THe brakes work through the entire session, no fade. The (titanium) valve adjustment interval on my 06 R6 ( yeah, yeah, I know it only turns 16K RPM) is 24,000 miles!!