Thanks AKRefugee - funny stuff!
My waving patterns have become seasonal. During the winter months, I wave at all riders. It doesn't matter what they ride - if they're out there commuting in the rain with me, then they get a big happy (wet) wave.
When spring rolls around, it's always so nice to see the first of the fairweather bikers emerge from their storm cellars so they get waves too. Again, I don't care the brand - I'm just glad they're out braving the chill.
By the time summer rolls around, I'm all waved out. There are bikes everywhere and I can't keep track of them anymore. If anything, I'll resort to "the nod" (but that's another thread).
And +1 to tx2sturgis for not waving at newbies. This spring I spotted a guy on a shiny new cruiser riding towards me so I gave him a friendly wave. He didn't spot me until the last moment so when he finally did, he kind of rotated his torso to wave at me. This led him to lean back and twist the throttle grip. Suddenly he shot forward like a rodeo cowboy on a bull, one hand holding onto the charging beast, the other hand swinging wildly. I could barely watch. Thankfully he got his free hand back on the bars and brought the bike back under control. Scared the crap out of me.
Maybe I'll stick to waving at kids and blondes.