This entire sentence is constructed of wild, unsubstantiated assumptions, strung together one after the other.
There's no part of this that resonates with my experience of the world, nor with the apparent fact pattern of the end of prohibition in places where prohibition has been materially ended.
One of the main goals of legalization is to starve black market actors of revenue. Extortion and kidnapping don't scale nearly as well as dope; therefore they are orders of magnitude less profitable.
1.http://fusion.net/story/108575/how-mexican-drug-cartels-are-...
But not all drug traffickers are Tony Montanas, there are legions of petty criminals, or even workers who make money on the side dealing drugs.
And rehabilitating criminals in the criminal justice system becomes easier when drug-war-induced overcrowding of the prison system is reduced.
Surely you don't think the only victim in the drug trafficking industry are actually drug users?
The problem with hardcore drug use is that it literally strips you of your decision making capabilities. Many people describe it as a secondary being within their body, for damn good reason.
The only reason I ended up 'normal' and not an addict is that I had the support system in place to deal with the underlying issues that caused my reckless behaviour, before they led somewhere I had no coming back from.
My addiction started with Adderall, prescribed by a doctor.