They didn't knock it, and trying is not harmless, because for example it can trigger or make worse mental disorders.

https://www.erowid.org/plants/cannabis/cannabis_effects.shtm...

Why not say this about something like self-harm, they might like that too. Both seem to cause damage to the self

I was mostly being provocative. Reality is that OP seems to be quite narrow minded and has made some enormous assumptions about people who smoke cannabis.

In very general terms, the world would be infinitely better off if people did not cast such wide nets on their assumptions.

Oxygen's a pretty potent carcinogen, yet I really enjoy breathing. Makes me feel alive.

100% of people who were breathing 150 years ago died, so your example holds up.

Life is a sexually transmitted disease with a 100% mortality rate.

Wow, the best exmple you could find is self-harm? How about rock-climbing that can also be very dangerous if not practiced safely?

It's true. Everything is literally the same, and nothing ever happens.

I feel like we've all accidentally dabbled in self-harm enough to make up our minds on it. I've stubbed my toe and wacked my elbow on enough sharp objects to know it's not for me.