The whole tenor of this thread is bizarre. You seem to be almost proud of your dp very weird. To be proud is just - weird.
OP have you ever looked into the mechanics of the drug trade? Never seen the human cost? It's not jsut the end-user (your P), it's the abuse, torture, killing of everyone in the way, or even in the gangs, and that includes women and children. Tortured and killed to get them out of the way of the supply chain to your P.
But if it makes him feel good for half a day, it is worth it, right? 
The monetary cost is one thing, but I couldn't be with anyone who lived for the feel-good of killing others. By being with him, by being proud of his struggle, you are condoning it. There should be consequences for him for the deaths he's agreeing to.
And it's NOT like alcoholism or obesity or smoking; it doesn't cost lives, young lives, to supply.