Russell, it's me again, dad. Look, you've made some good points, but you're a C student here, at best. There are a million things that people should or should not do. Your scheme is to legislate all of them. Sure, drugs might generally be bad. For example, if I was training to be the best marathon runner in the world, I wouldn't want to do ANY drugs or alcohol. For that matter, I might also be very careful where I ran (not next to a busy highway (pollution)), but if I'm just managing a bunch of workers in a factory, I don't think it will be as crucial if I eat Cheetos. . . or smoke pot on occasion.

Here's where you went from an A student to a C student. You forgot that your legislative scheme places harsh punishments on people who don't conform, to the point where the cure is worse than the disease, so to speak. Which would you rather do, smoke pot once per week or spend the rest of your life in prison. From a tax and government funds perspective, I'd rather you smoke pot.