Fact: Humans Used Pot For At Least 9,000 Years

[MineralMan]

5. People have used all sorts of medicinal herbs for thousands of years.

They've also used psychoactive herbs for the same length of time, since they are also medicinal.

Opium and its byproducts are among them, as is marijuana, Jimson Weed, Stramonium, Digitalis, and many, many others. In fact, only in the past century or so have modern pharmaceuticals existed at all. Before that, plants were the only medicines.

However, that does not necessarily mean that all such plants are good things to consume. Some are. Some are distinctly not or are dangerous when used unwisely.

It is not a good argument to simply say that something has been used by humans for thousands of years. The argument must go beyond that to actual argue for continued use. There's nothing wrong with smoking some weed, but saying that is because humans have used it for thousands of years is not an argument that is convincing, frankly.