The question does it accomplish anything -- yes, it pisses other players off, which you can use to your advantage.

I find it annoying, but I understand why people do it. My take on it is that it does two things -- 1) It might get you to the money, depending on the payoff and a player's situation, it might make sense 2) It decreases your chances of improving your situation. You want to see more hands. If you are doing this, you need to get lucky, and you need to get lucky more than once....