Why do BMW drivers typically not use turn-signals?

In driving around, BMW drivers are conspicuously devoid of using their turn-signals. Much more so than Mercedes Benz, Lexus, Saab, Volvo or any other high-end automobile. Is there something ergonomically wrong with the vehicle, or just the attitude of the typical driver who would buy a BMW? Of course, there are... show more In driving around, BMW drivers are conspicuously devoid of using their turn-signals. Much more so than Mercedes Benz, Lexus, Saab, Volvo or any other high-end automobile. Is there something ergonomically wrong with the vehicle, or just the attitude of the typical driver who would buy a BMW? Of course, there are exceptions, but the ratio is much higer with BMW drivers.
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