Before posting a new waive topic, I decided to revive this thread.
After reading through the post, I noticed that most have the same experiences that I have, even with me only a little less than 600 street miles under my belt. I've grown up with dirt bikes, ATV's go-karts, and driving all over at 12 years of age in Bobtail Bronco's.
I look at riding as a two-wheel experience. I waive at all riders and so far, the most unreturned come from HD guys riding together---usually younger in age; I am 27 btw.
I believe that more riders need to ban together and increase rider awareness. In IL if you hit a construction worker it's up to 14 years in jail and a 10000 dollar fine. I'd like to see the same enforcement applied to hitting a motorcyclist. Granted some riders feel the need to go exceedingly fast or have a few alcohol drinks and that is the riders fault, but in events where people are in outerspace and run people over, that needs to have a higher punishment.
Bikes are a great way to quickly curb America's thirst for petro, go juice, and reduce the congestion that major areas are plagued with.
In sticking with the topic, even if I don't get a waive from the first group of riders, I still extend the limb below the bars for the next group. It's a bike thing.