Drugs aren't just an escape from suffering. I have a very good life. I also like having a beer with friends or, yes, smoking weed with friends. That amplifies an already positive experience.

If you magically eliminated all suffering in my life, I'd still enjoy a beer at dinner.

Why? Drugs are fun. I drank a hot cup of coffee this morning and enjoyed the warmth, taste, and way it made me feel. Those were all pleasant sensations that would be hard to get another way. Why shouldn't I be allowed to experience them?

Roller coaster rides are fun and cause a release of adrenalin in me, which leads to feeling hyperalert, excited, and energized. That's fun! I don't want to live in a society that wouldn't let me enjoy adrenalin releases.

This morning my wife told me she loved me, and I enjoyed a nice wash of endorphins from it. What's wrong with enjoying that?

The common thread here is that there's not a clean dividing line between "bad" drugs and "good" drugs. All animals enjoy certain chemicals. We're evolved to. That's what makes us (in nature) dig into food that's healthy for us, and drives us to reproduce. A mind free from drugs is going to die of misery in relatively short order.

In what sense is your mind free in a world where psyotropics are prohibited? LSD and psilocybin aren't addictive or habbit-building, think about that. Don't knock it 'till you try it.

This is the "limiting harm" part of 2.