Agree, it's not pious when I've been out on the piss to refuse to drive the next day.
Getting behind the wheel of a car when you're not sure of your alcohol levels is insane. If I need to drive, I don't drink. If I'm drinking, I don't drive.
I'm very black and white on this subject. Not through being pious, but through being an ex copper who has dealt with the deaths, injuries, crashes, sadness caused by drink driving.
And EVERY SINGLE drink driver I've ever arrested or ever dealt with in custody (I was intoximeter trained) "only had two drinks". All of them, without exception. Even the ones who should have been dead from alcohol poisoning. Even the ones who were still drunk the morning after they stopped drinking. Even the ones who "only had two pints three days ago".
And every one of them had the cash on their person to get a taxi for the journey they claimed to be making (ie home from the pub etc).
Utter disgraces, the lot of them.