I am all for zero tolerance. This is not to say that I don't like a glass of wine with dinner or that I don't enjoy a cocktail with friends. I enjoy both activities on a regular basis. What I don't do is drive afterwards - for several reasons. One I am on the small/short side - I can "feel" the effects of one glass of wine and if I can feel it, I know it will affect my response behind the wheel of the car. Two - I am a parent of teenagers and I want to set the right example. Drinking responsibly includes not driving afterwards. Three I have lost friends to drunk driving and I have friends who have lost children to a drunk driver and these are not experiences I would want anyone to face.