Oh, please. The fanaticism about drunk driving has become goddamn ridiculous. It's not about public safety anymore, just about the demonization of alcohol consumption in general. There's a whole list of things that you can do in a car that are just as dangerous or more dangerous that people do all the time, but because it's not related to evil evil booze, nobody has this attitude about any of those.
I work the night shift. When I was getting used to it, I drove home a few times so tired I fell asleep at the wheel. During those times, I was more of a danger to everyone on the road than all but the worst of the drunks, but I can tell people about this and receive nothing more than mild censure at worst. Some people even have sympathy. Then there's texting while driving. Not only have studies shown that this is many times more dangerous than DUI, but there have been multiple high-profile accidents that resulted in a lot of deaths. It's also much easier to avoid doing than driving under the influence, and of course much easier to avoid driving home tired after working a bunch of hours. But because it's not related to EVIL alcohol consumption, it's not even illegal in many states, and in the others it's just equivalent to a speeding ticket. Nobody really cares if you do it, either.
I'm very skeptical of anyone who claims they've never driven under the influence unless they don't drink at all or very rarely. 0.08 BAC is very easy to hit, everyone metabolizes alcohol at different rates and it can even vary wildly in the same person. If you drink enough sometimes you're still at this level even after going to sleep and waking up in the morning, I'd bet quite a few of Monday morning commuters are still technically "drunk" from the previous night.