I think you wouldn't have to disallow people from smoking pot while driving if you reinstituted the concept of debtors prison.

Frankly, the only reason why drinking alcohol while driving needs to be illegal is because there's way too much of a safety net for recklessly driving and getting into accidents. Today I can decide to be a retard and kill a pedestrian and its unlikely I'll do jail time or pay out a lot of money unless its blatently obvious or I'm drunk at the time.

That, to me, is just plain bad Driving a vehicle is a responsibility, this country's policies shouldn't remove the weight of that responsibility from people.

I'm personally in favor of individual financial and behavioral responsibility. I don't feel bad for people who drive poorly getting sued. Our system doesn't 'provide a safety net' so much as it encourages people to treat every situation (debt, getting into accidents, taking care of their health/healthcare, etc) like a privilege which they don't need to actually do the right thing with. And the people who are least likely to have any issues with debt and stupid behavior typically make the most money and shoulder the heaviest burden of other's idiocy.

So, more or less, those of us who aren't irresponsible idiots, are paying for others to have the luxory of acting like children.