system
A chat on subreddit /r/NoStupidQuestions
human
They exist to meet a demand (people who want to use drugs). 

I think many drug dealers make a lot more money than they otherwise could by working at a legal job.
gpt
Also depends on your definition of drug dealer. Are we talking Pablo Escobar or the neighborhood weed dealer who’s only customers are the ones too young to go to the dispensary? Very big difference in lifestyle and profit margin.