Your post demonstrates unequivocally that any BAC level is completely arbitrary, and that these laws have been abused, both ludicrously and vindictively.

I submit that you have made my point.

Laws need to be rational and not arbitrary to be valid. They also must have an actual victim other than "the state". This may seem like a rather academic point, until you realize that countless millions of people have been murdered and caged for a multitude of other victimless "crimes", like, say, possessing the wrong sort of plant.