Originally Posted by corncracker
I don't feel like quoting whoever said this, but they menitoned saying thanks to a guy who sells them something.
What possessed people to start saying thanks? They guy selling you something is in no way being a nice person or being polite, he is doing it so some other dude will pay him money. The chances are they are not even themselves when they sell you something because of the Job, so a thanks is hollow and pointless there. I still do it only out of force of habbit, but I know the guy could care less if I say thanks or not. Usually they want you there and out as fast as possible unless you get along.