I'm reminded of a time when I was out alone on my road bike, wearing my cycling gear, and I passed someone going the other direction. He was in dirty street clothes riding a battered standard. I waved and nodded as I went by. But he'd already made up his mind that I wasn't going to, to the extent that he didn't even look for my wave before he sarcastically sneered Good Morning at my back. Now, who was the snob there?
Ride your own bike. Wave if you want. Don't wave if you don't want to. Life's too short to spend it judging other people.
Speed comes from what you put behind you. - Judi Ketteler
Some wave, some don't. I rarely see people on the trail out here so when I do, I greet them. When riding on the rural roads I wave at the trucks to acknowledge their presence and so they know I'm mostly harmless. Most of the guys in the trucks wave first so I always make sure to wave back. Sometimes it's so easy to get focused on your riding you totally miss your surroundings.
I rarely wave to other cyclists, but I'm usually in Manhattan and there are a lot of cyclists.
Are cyclists snobs in general? I don't think so -- because cyclists often offer help if I'm stopped and look like there's even a slight chance I might need something. To me, that is far more important than waving.
I did experience something like snobbery when I took my Xootr on a rail trail in the suburbs -- a few cyclists were literally snickering at me. I gave them a big smile.