Because we don't raise crap when things are dictated to us. Because when a four wheeler gets into an accident with a big truck, WE are the scapegoats! Because with more limits placed on us, the public gets the perception that things are hunky dory, and they can continue to drive like idiots.
One other thing. Truckers are generalized as the turnip that fell off the truck. Granted, a lot of truckers wouldn't have second thoughts of downing a 6 pack and jumping in the seat to do a load. But we are one of the few industries left that gives this kind of power to a group that hasn't graduated high school. What scares me more is the fact that the ppl who are currently writing laws that WE have to abide by, don't have a friggen clue about TRUCKING!
Having said that, I agree that someone who gets knocked with a DUI should be penalized as far as a truck driving job. How far? Depends on the circumstance. But I know there are still a ton of cowboys out there who are looking to down more than a couple on their 10 off.