Most of the drug laws are due to back door racism, at least here in the US. They couldn't make laws that directly targeted minorities and so they made laws that targeted things that were part of the targeted minorities culture. Opium and heroin laws seemed to target Asians and the weed laws seemed more to target "beatniks" and Native Americans. It's an interesting (if depressing) research topic of you've a mind.

why is weed legal while other less harmful drugs like weed (UK) are illegal?

wat

If I can black out from weed while making coffee sure to fuck weed which has never made me black out should be legal?

Lol I know you meant nicotine and not weed, I think the nicotine is still affecting you

why is weed illegal

Now that's a good question, very odd indeed. But I don't know the answer.

You passing out from huffing on a vape is your own, wierd, unique reaction to nicotine due to your own misuse. I can pass out if I huff a glass of water and that would likely kill me. You can slam 20 energy drinks and make your heart explode, you can eat too much food and die, you can drink too much alcohol and get alcohol poisoning. That is all equivalent to someone who apparently has zero nicotine tolerance taking rips on a vape and being mad they got light headed. That is your own fault. That being said, I am totally down with legal weed and illegal nicotine, however, weed impairs your judgment for hours, nicotine only makes you a bit light headed for a minute, and only if you don't have a tolerance. I say this as I rip my 12% vape with zero effect.