I'm not a mathematician, but it seems to me that a response to this is that, yes, if a blind 80-year-old driver sideswipes you, you certainly will be injured or killed, but how likely is that to happen?

In Minneapolis recently, some guy was driving on one side of a divided freeway going to work, and on the opposite side, going in the opposite direction, beyond the physical median that separates the different directions, was a garbage truck. A wheel detached from the truck, bounced over the median, hit the front of the guy's vehicle, and killed him. All it takes is one garbage truck with a loose wheel and, bam, you're dead.