This is a ridiculous question, the answer is because they are illegal, of course.
Most of us aren't willing to risk a criminal record.
I wouldn't know where I could obtain such items even if I wanted to buy them. If I can't buy something off the shelf at a retail store I'm simply not going to bother.
Sketchy/unknown supply chain.
Tons of us have jobs (or whole careers!) that we could lose for using illegal drugs, many of those jobs include random drug tests. I'm not risking my entire fucking livelihood without a damn good reason.
Most of us aren't willing to risk a criminal record.
I wouldn't know where I could obtain such items even if I wanted to buy them. If I can't buy something off the shelf at a retail store I'm simply not going to bother.
Sketchy/unknown supply chain.
Tons of us have jobs (or whole careers!) that we could lose for using illegal drugs, many of those jobs include random drug tests. I'm not risking my entire fucking livelihood without a damn good reason.