Believe the government that all illegal drugs are bad and don't realize that virtually everything you put in your body (think food) causes a chemical reaction affecting mood, behavior and thought.
Instead of blaming the dealer...blame our shyty drug scheduling and drug education...they dont tell you the truth at all...did school ever explain the different levels of dangers presented by different drugs...or how some drugs can be relatively safe if not mixed with other substances. They just said all drugs are bad. That's not education that brain washing and it doesn't work.
Not to mention ask medical and psychological experts and they agree, drug usage isnt a criminal problem it's a mental problem and we would be way more efficient at combating detrimental drug use if we attacked it like a medical problem instead of locking up people who are self prescribing.