I appreciate the passionate responses against drinking and driving, but honestly I am a little surprised at the mostly unanimous responses too. I see where you all stand and generally agree, but do you actually think it's wrong to have one beer or glass of wine with dinner, and drive after that? I'm sure we all at least know people who do that with no problems. If you're a big person, and you wait a couple hours, your blood alcohol level will be .00 if you have only one drink. Maybe it's always best to not drive if you drink, based on a slippery slope type of argument, but I think having one drink at a restaurant or friend's house can be acceptable.
Like I said, I never drive when I'm not sober. However I can have one light beer and be sober, so I don't feel bad about that. I have never lost someone close due to a drunk driver though, so I understand that probably drastically changes things.