The goal is to keep people who are in no condition to drive from doing so and punishing if they act irresponsibly. I'm not going to argue that. The problem I have is that we are not trying to determine if people are impaired, we are testing a blood alcohol level which may or may not tell us anything about a person's impairment. Of course, we aren't measuring blood alcohol levels either. We're using a breathalizer to ESTIMATE the blood alcohol level. The problem that I have with current drunk driving laws is that it is legally worse to smash head on into a car with your family in it because you were drunk than because you were reading the morning paper and it's legally no different to do the same thing with a cell phone in your hand. It really doesn't matter to your family, does it?