answer:Aside from being hyperbolic and inflammatory, your premise is, frankly, absurd. Not all drivers ae slavering, drooling idiots all the time. Some may be that bad at all times, but that’s not your premise. And the fact of the matter is that even walking on sidewalks, stepping on stairs, waiting in lines at supermarkets and in movie queues, people are not as altogether immobile and “regular” as you might expect. But they’re also not (usually) in vehicles and they’re never traveling at 60 mph or more in those situations, either. In addition to the foregoing, in a supermarket checkout lane there is “a single line”, and it’s easy to see – and talk to – anyone who decides to cut the line or step out of it. We can’t do that in traffic, and there are vanishingly few places where “a single line” ever exists on a roadway, anyway. If you can’t account for and deal with the fact that you often have to take extra care with your vehicle because others don’t do the same for their own, then maybe it’s time for you to consider a different line of work, or just get off the road. The thing is that people are always imperfect, often change their minds, make mistakes of direction, inattention, laziness, impatience and distraction – all the time. When it happens at 60+ miles per hour, then the effects are magnified. I share your antipathy for drivers who aren’t aware of and concerned for others, but I never make the mistake of thinking “they’re all that bad”. However, I never lose sight of the fact that “I don’t know which one of them is going to be that bad, so I do have to watch all of them.”