As someone who had a DUI once, I will say that I see both sides of this issue. It is not right to be drink and drive, I was stupid to drive when I had any drinks, even though in my impaired-thinking state I thought it best I do so because my friend had a lot more to drink than I. However, I also see the other side, that 1 or 2 drinks does not neccessarily make you less "impaired" than the person talking on the cell phone, the person talking to their child in the backseat, or the person changing the radio station (all of which are perfectly legal). In my particular case, I was at a complete standstill, waiting to make a left turn. A man with his child in the car had just come from a fast food drive-thru and was distributing the food in the bag between him and his child, while using the center turn lane as a driving lane, not looking where he was going, and ramming right into my car, moving the entire front end over about a foot. He had only bumper damage to his van. I got arrested, taken to jail, and charged with the accident, and had to pay thousands of dollars of fines, do community service, be on probation, have my license suspended, and go to classes, AA, and counseling. He got nothing and he caused the accident. I have never had even a ticket before that, and have not since. I was not right to drink and drive, but the other driver was just as careless, and if any lives were lost it would have been his fault, but my punishment.
Yes, drinking and driving is wrong. I will not drive while under the influence of even one drink anymore. But drinking one or two drinks many times has the same amount of impairment as a lot of other perfectly legal things. You have to look at both sides of the story, and if a person who gets in the car and drives after having one drink is a good for nothing criminal, so is the person talking on their cell phone.