I think we should see how legalizing marijuana goes
If that works out then consider other drugs
Again, there is more harm because of their illegality than the drug itself, and if you sold drugs from government (statist) stores, you could better treat the users.
Like meth users break into cars and houses to steal stuff to trade for drug. If you just gave it to them, they would stop stealing.
And you could give them drugs in trade for having to talk to social workers who would help them to quit using, maybe help them to eat better,...
Besides, I believe Walt is looking for a new gig and could produce lots of good meth : )