Alcohol vs. Cannabis - Is any of this information incorrect?

Well cannabis has a long history of how its used and why it's illegal. It's not even addictive and yet people who never even tried complains it bad. It's x100 better then ciggs and prevents cancer. My theory is that the us and most governments made it illegal because it helps to much. Example smoking or drinking always most likely leads to a trip to the hospital which always cost money and buying pills ect to cure it. Cannabis helps in tons of ways but people who don't want it of course never even tried or smell it. It smells really good. Feels good to get rid of stress.