If you are going to do a cost/benefit analysis of drugs, what do you include in the costs? Do you include direct medical care, counselling, crime, and/or insura

If you are going to do a cost/benefit analysis of drugs, what do you include in the costs? Do you include direct medical care, counselling, crime, and/or insurance? Do you count the financial or emotional costs borne by family members? Do you count lost income? Do you count lost taxes? How do you account for positive outcomes from drug use, such as potential improvements in productivity, or creativity? Do you count benefits to happiness, emotional well being, sense of belonging, or fellow-feeling? How do you count all these? Do you evaluate risks from a straight expected-value or do you use some risk-aversion factor? What is your time preference (i.e. 'interest rate'), and how do you derive it? I am not aware of any government policy based on science; the ones that reference scientifically derived evidence are mostly justifying intuitive/emotional judgments. It may be a Hume-ian perspective, but I am not aware of any compelling evidence to the contrary.