Drugs

t. has never lived with a heroin addict

Abolition of Capitalism would deal with the Opium crisis

Because if a High level of Automation is achieved and people are left with nothing to do but enjoy leisure all day then why not let them enjoy themselves?

He is right, though, addiction also has a neurological aspect. Capitalism's role is driving people to these substances to begin with. People who use drugs for fun are more likely to use soft drugs.

Well then the issue is solved anyway ehh?
also

Well, if we're talking about a utopia where the proletariat doesn't need to work, then I don't see a problem neither (but I think that a world where nobody thinks or works and lives drugged is a horrible dystopia). But that's not going to happen any soon comrade, we need de proletariat whit keen and sharp brains and ready-to-work muscles for the revolution.

What creates heroin addicts? Shitty social conditions.

Like I said, Opium has been used for millennia. Do you mean to say that social conditions have never been good since we were cavemen?

Addendum: Countless kings/emperors/dictators have all been massive drug addicts. They are not exploited by anyone, how do you explain their drug addiction?

Capitalism or not, the effect of a heroin addiction remains the same. Reduces people into one-dimensional caricatures of themselves. It's honestly pretty fucking frustrating that people would push for this shit to be normalised; addicts need help, not further encouragement.

Well, yeah… kind of. Life was extremely more boring before the Industrial Age, and mental stimulation is so common in the Information Age that people's attention spans are becoming dangerously short.