Driving itself is dangerous. Acknowledging this is obviously smart and correct.
And while I'm sure that you can drive safely at 100 miles an hour, or after five beers, some objective standard has to be drawn somewhere. If the line were drawn at 0.16, someone would no doubt chime in to explain about how they've got it fully together at 0.17.
I'm not making some radical point here, I'm speaking basic reality.