Jeffry Miron of Harvard explains here how drug laws foster violence in society, creating a hazard to your health that's completely unnecessary.
I'll go one step further. Imagine this. You are a member of Congress. Your phone rings at home one evening after dinner. The caller tells you he is prepared to donate $100,000 to your upcoming re-election campaign.
When you ask who is calling, he says he is a concerned citizen, but prefers to remain anonymous. The caller has only one request; that you support completely and absolutely the war on drugs. That's it. That's the only requirement.
The caller tells you the check will arrive within the week, provided you make a public statement about your unending and uncompromising support of strict drug laws buttressed by forceful prosecution of drug offenders.
Question: who do you suppose would make such a call? If you can figure that one out, you evidently understand people, economics, and the nature of the drug business. If you have no idea who would make such a call, think about who benefits most from drug laws and follow the money.