Here I've seen over the years less and less people waving back. And then the Gold Wing rider altought they usually wave, you can't see them cause their fairing is too big. Then the Harley guys only wave to other Harley but now since many Jap custom's look just as much as their Harley sometimes they're all mix up. Usualy the sportbiker's wave to other sportbiker's. And now you have the big scooter's and ... well, well.Better to wave to everybody, but I usually dont even look if they have wave back, cause it make's me mad.