Yeah, that's true for me too. I've started trying to engage people in conversation -- like if I'm stopped at a light and there's a taxi next to me, with the window down, I'll say hello to the driver, ask how he's doing. Same with another bicyclist, or whatever. And oddly, it really helps my attitude; exchanging good mornings with one taxi driver somehow makes all the other taxi drivers less oppressive.
In our town there was a guy like that. Rode around on a bike talking to everyone. He was "The town idiot".
Man, those village idiots have all the fun.