In this case your joke was dismissive of a drug that holds promise for a lot of people (including some that I know). It has a stigma that it has to overcome to be used medically and your joke just piled on the stigma with an implicit snobbery that practically begged for a comeuppance. There was no /s appended so it could only be taken at face value.
You got down votes and double-downed by saying it worth it. Was it? The community disapproved of your comment and you cheekily said, in effect, "fuck you, I'd do it again"
Then you tried to school me on the fact that alcohol abuse occurs all over the world, as well as drug abuse in the States. Sorry to burst your bubble, but I'm well aware of it.
You called me a sap and then accuse me of a slur? For saying you were acting butthurt? You were. We've all done it, so I claim no moral superiority here.
And finally, to return to my initial reply to you: reports have shown that binge drinking is a health issue but it's tolerated because it's the one recreational drug that is legal. Perhaps if cannabis, MDMA, K and others were legal than people might be able to enjoy themselves with less harm.