I tend to be long-winded. But this can be summed up nicely by saying, "What the hell is wrong with people who ignore you when you say hello on the street, or have a nice day at the end of a transaction and they just walk away?" I mean seriously? I suppose there are the few times they just don't hear you, but not often. I think it's just plain rude.
When you pass someone on the street, just smile, or nod. At least in small towns like Brattleboro. I guess in the city it's only practical not to be overly friendly, but not out here in the sticks. But no matter where you live, be it urban or rural, you should treat co-workers with courtesy.
I'm going to start calling people out on that shit. Maybe.