Let's turn this around to the passenger's perspective, for a moment, if we may. My attitude as a customer tends to reflect the attitude projected by the FA's. If someone looks at me when making requests so I know who's being addressed, and waits for my answer when taking my beverage order instead of immediately resuming their conversation with their colleague so they can't hear my answer, then I can be very pleasant and even, at times, charming, or so I'm told. But if the beverage cart consistently crashes into my elbow just before I'm warned to watch my elbows (I don't have radar, and I've probably got the headphones on... I have no way to know when the **** thing is coming down the aisle beind me), and the FA jams the adjustable headrest into my shoulder blades without asking me to lean forward first (or, God forbid, waiting for me to put it down myself), or the first request to put the seat back up for landing is accompanied by the FA reaching into my seat for the button as if I don't understand how to do it myself, then I can be just as cold and distant as the next BC passenger.