Tim, have you ever used a breathalyzer? Most jurisdictions set their "DUI" limit at 0.08 mg/L. I used to think that was pretty low, and would catch a bunch of innocent people just having a beer or two while out to dinner. A couple of years ago, I bought a home unit, more out of curiosity than anything, but also in case I ever needed to verify that someone I had served homebrew to was in fact safe to drive home (covering my butt, legally, so to speak, what with liability laws as crazy as they are nowadays).
The few times I've tried it on myself (again, just out of curiosity to see if I could guess what I'd blow), the results were shocking. After 4-5 beers, I felt perceptibly buzzed, certainly not confident enough to drive, and yet when I blew, I blew a 0.06. As off-kilter and uncoordinated as I felt, I was in fact still legally within the limit to drive a motor vehicle.
I guess what I'm saying is, the people getting DUI's aren't people who had 2 beers while watching the game at the bar, and who got unfairly picked on by a bored cop trying to make their quota. (In my city, cops actually hate catching DUIs, because it's a ton of paperwork and takes them off the road for at least 4 hours). Someone who blows 0.08 or higher is a legitimate danger to others on the road. 0.08 is a *generous* limit, in my opinion/experience, which makes it all the more crazy when I read about people getting pulled over and blowing 0.24. I'd be passed out at that level.
So to claim that everyone here as "driven legally drunk" belies an ignorance of just how intoxicated 0.08 really is. It's actually pretty damned drunk.