One can also make the argument that legalizing would decrease the amount of illegal importing. There wasn’t much need for moonshiners after prohibition ended. Mom and pop shops hurt when Walmart comes to town. You get what I’m saying, less people looking for illegal cannabis, less people selling it.
Less small time drug dealers, less street drugs available to kids. And, if the kids are able to get their hands on legally obtained cannabis (remember, these kids would be getting cannabis either way) at least we would know it’s regulated and “safe”. No lacing with other drugs. No accidental fentanyl overdoses.
I just keep going back to the point of, having cannabis illegal only hurts those who are willing to do things the right way. Those willing to do illegal stuff are the ones doing it as we speak.