Sounds simple. But it is just complex enough that people don't understand. For example...

If you have a comb in your pocket, should government create policies to regulate your comb or how you comb your hair? It would be stupid for them to waste their time like that, but they have two choices, stupid or not:
1. Legalize and regulate combs;
2. Don't legalize and regulate combs; and repeal all laws that already legalize and regulate combs.

Get government out of it so that the people have easy freedom. After all, cannabis has been used for thousands of years without regulation. Why legalize it so that it can be regulated, now? Just get government out of it... and out of a whole lot of other things.

"But, but, but..." you say. "What about people who get high and hurt other people?" Here's what.

Government should advertise the dangers. Then, punish people who hurt others... "eye for eye, tooth for tooth, hand for hand, and life for life." If people aren't smart enough to regulate themselves, especially when they see what will happen to them if they harm somebody after all the government advertising, then they shouldn't be around. Let them be punished for the damage they have done, and let their family take care of them.

I mean, they are going to die anyway, something. They simply expedited their own death process if they misuse cannabis or other drugs and die because of it. It's called freedom.