I would say yes. Most of the problems we have with drugs are a result of drugs being illegal. If heroin addicts were able to buy a known product, unadulterated, at a reasonable price, we would have less crime and fewer ODs. And absolutely no one would try "bath salts" when they could get safe, researched, legal highs.

If the argument is that everyone would just become drug addicts, I would argue that a hell of a lot of us already are drug addicts, just addicts to more socially acceptable drugs. And if reality can't compete with drugs, reality should step up its game.