I'm going to take it in the ass for this, but...
I've never driven completely fucked out of my mind where I'm oblivious to my surroundings and have difficulty speaking/walking, but when I'm in the country, driving alone on country roads in the middle of the night, I find myself to be very capable of adequately and rather safely operating whatever vehicle I may be driving...snowmobile, Atv, Car, Truck...etc.
From what I've seen/heard, drunk driving accidents happen when someone who's had way too much to drink thinks that they can drive a car full of people, with the music blasting and the passengers jumping around. When some people do this, they for some reason think that they have something to prove at that exact moment...and also believe that they are invisible. They drive at excessive speeds, get distracted by their surroundings and get themselves into situations because of that.
I.E. some 19 year old punk kid is driving 90 MPH on the freeway, swerving through cars, blasting lady gaga while singing to the hot chick in the back seat, loses control and hits a pole. Driving at elevated speeds and attempting dangerous "stunts" is a risk for any driver, sober or drunk (but of course the odds are worse for someone who's had too much to drink). Although, because some people are immature and can't control that need for speed, they get themselves and others in trouble for it.
I hope nobody reads this the wrong way, thinking that I'm encouraging drunk driving. This is not my stand at all. I'm merely trying to state that driving with a "buzz" could be done "responsibly"...to an extent. By not taking passengers, not listening to music, not driving at excessive speeds, not talking on the phone....basically just focusing on the task at hand, it's almost as safe as driving next to the soccer mom in her Yukon with all those distractions.
Don't tell me you've never driven behind an SUV, that's been swerving on the interstate, cutting people off and driving fast/dangerously all because they were talking on the phone/fidgeting with the radio.
Anybody dig what I'm trying to say?