Are you sure that poor people use drugs or do drugs make people poor? Maybe a little of both?
Everyone I know who has vices, are always complaining that they’re broke - even if they make similar money to me. I meanwhile am more than comfortable and can afford to buy pretty much whatever I want, whenever I want it.
It's both. Certainly people who make poor choices fall further from their current position and there's those with nothing to lose that drown themselves. Then you have the wealthy and upper middle-class using for recreational purposes.
And where demand exists, drug trafficking will find a way.
I'm for the death sentence for drug traffickers.