Originally Posted by genejockey

Because there are so many other people out on the roads. If there weren't a cyclist passing every couple seconds, maybe I'd be more likely to wave. I also don't wave at other drivers when I'm in a car.

And you know, honestly? - I don't actually like being talked at while riding, so I return the favor of silence. It's part of the whole 'low social needs introvert' thing. So if I pass you without saying 'Hi', don't feel singled out. I don't greet anyone. Please don't chase me down and try to talk to me.