Granted, I don't ride a crabon super-bike, as my tastes and budget are a bit more proletarian. And if you want to see today's tech on one of my bikes, you might have to wait a decade or three. Still, an issue is that for many cyclists, there's no clear dividing line between exercise, recreation, and utility. I want all three, at once! All other things being equal, a lighter bike is more fun to ride.