I have been driving for more than 25 years now. Using my turn signal is as natural as breathing for me. In fact, when I move around the idiot who insists on driving like a little old lady in the left lane and purposely don't use my signal when I cut in front of him, I feel a little awkward. Not because I cut him off, mind you, but because I didn't use my signal.
Would it kill you to turn your signal on people? One flick. Up for right. Down for left. Easy peezy. And it even shuts off on its own. Genius!
In my 25 years of driving, I have noticed something. You must have noticed this too. When driving behind someone in a BMW, they never EVER use their turn signal. I don't know what it is, but I have yet to drive behind a Beemer that has a turn signal on when it makes a turn or lane change.
So I have come to a conclusion:
The Turn Signal Package is an option in BMWs. Not only is it an option, but this option is so expensive that it precludes the owner from purchasing it. Even after-market packages are too pricey.
This must be the reason. I mean really, they can't all be ignorant asses, can they?