Turn Signal

Why do people feel the need to use their turn signal while they are in the specified turn lane? It is obvious to me that you are turning that way, otherwise, you should not be in this lane that says "turn only". Tell you what, you can leave your signal on in the turn lane if I can point at my ass when I ask where the restrooms are located. And while were at it lets all meet together to turn on the hot water heater and arrest the armed gunman. Are these pleonasms doing anything for you?