Well, it depends on what's important to you.
I like to go out to a bar and have a few beers, and when my band plays (a few times a month) I typically have 3 or 4 shots of tequila over the course of 4 hours. I drink plenty of water (which helps avoid hangover), and I make sure that it's been at least a full hour since my last alcohol, before I go out the door to my car to drive home.
That keeps me pretty well under the legal limit. There's still a little alcohol on my breath, but I'm sober enough to pass an honest Breathalyzer. And I am acting essentially sober.
But more to the point, to be perfectly candid, I have managed to avoid driving drunk (over the limit) for nearly three decades. I don't consider it my right to drive drunk (and being a small-l libertarian by nature, I am quite careful about my rights).
It's my belief that even today, cops are not, in general, out to prove that you're drunk if you're not. They're out to catch the guys who are a clear and present danger on the road. The faster I can convince a cop at a road-stop that I'm not a danger to anyone, the faster he lets me go so he can catch somebody he can nail.
Again, that's my opinion and experience, YMMV.
You are part of the problem and not a part of the solution (and no solution is needed because this is an exaggerated problem, BTW).