Well yeah we all die eventually. Drugs aren't necessarily bad and hyperbole about them doesn't help because it's an obvious lie.

That said there are points in some drug addicts lives in which death might be the preferable alternative in their eyes.

You get a coin and your candy dice - smoke one, and you use the next available, smaller die.

Smoke your d20? Good luck making your checks on a d12. Down to the coin? Hope you've got the massive bonuses to lift that 2 to a passing roll.

Not a terrible way of transposing the effects of a crippling addiction into the game.