I think our society does take it as a serious crime. The problem, as I see it, is that people aren't sure when they are committing the crime. I'll bet every person reading this has had a couple drinks and got behind the wheel thinking they were fine. And they probably were. But it all depends on how much they have had to eat. How fast they drank those drinks. How much time they allowed before driving. How much alcohol was in their drinks, etc. If bars and restaurants had some way to let patrons know how intoxicated they were, I'll bet there would be fewer drunks getting behind the wheel.
I bought a breathalyzer for $25 because I thought it would be a lot of fun at golf tournaments and whatnot. I've already called my wife once to come get me and I've had 2 friends get rides who otherwise would've driven themselves. It's hard to tell when you are too far over the line, not to mention you lose judgement the drunker you are.
If people had some way to know just where they were BAC wise (blood alcohol content) I'm sure they would arrange other ways to get home. There are keychain breathalyzers that are surprisingly accurate.
This is the one I got. There are plenty of them to choose from. Get one and use it.