I don't mind racking the balls myself, but people always seem to argue with me (e.g. in 8 ball: stripe-solid racking or stripe and solid in each corner) or people don't rack over the spot; they'll visibly rack a half ball behind the spot or even a full ball behind it. I'll tell them "Hey, it's not on the spot," and this "broski" looking guy wearing his bedazzled Ed-Hardy t-shirt will say, "IT DOESN'T MATTER, BRO." I'll never rack for these kinds of people. Also they don't understand the importance of a tight rack so they'll always half-assedly rack the balls.
So to avoid arguments, I just say "rack your own" with these certain players. Sorry if you get offended. :sorry: