Ever been driving behind a car on a one lane road only to find they stop for seemingly no reason at all? Then, much to your suprise, they make a left hand turn. No blinker, hand signal or even a smoke signal.
This non-blinker using driver is most likely thinking (or not thinking) "I know where I'm going, I don't need to use a blinker." What they are failing to grasp is that the blinker is not for them - it's for everyone else!
This lack of consideration is definitely one of my driving pet peeves. Let's make America great again...please use your blinker.