Why do you always stand to one side in the elevator, even if you're the only one in it? why do you always seem to lean sideways?
Why, if you are getting on the elevator and going down and you're on level 2, do you feel the need to check which floor the elevator is going to. You're on 2. You want to go to 1. If it's going down, there's only one option, 1st floor.
By the same token, if you are on the top floor, why do you check and make sure it's going down? You're on the top floor. It can't go anywhere but down.
Why do you push the up, down, or floor buttons several times? It's not going to go faster just because you pushed the button 2 or 3 times in a row. And why, when you come upon an elevator and the up or down button is lit, and someone is standing there waiting for the elevator, do you push the already lit button? It's already on its way. The elevator isn't going to think, 'Oh! JOE pushed the button! Better hurry then!'
And how does it always seem to happen that the person who wants off on the second floor is at the back of the elevator? Or someone sees a full elevator and try to cram yourself AND your cart full of crap into it?