Dude, I love in Moscow, and people I know (I'm afraid that they are past recreational use and are deep into real addiction) who buy mephedrone, spice and amphetamines from darknet struggle to pay $400 monthly rent. Why would you some that using Bitcoin has any correlation to how well off you are?
Obviously it's different there. I promise you that in major cities in the US a large amount of drug dealing is done by the poverty class, and 99% of them deal in cash only.
