"Drug warriors often contend that drug use would skyrocket if we were to legalize or decriminalize drugs in the United States. Fortunately, we have a real-world example of the actual effects of ending the violent, expensive War on Drugs and replacing it with a system of treatment for problem users and addicts.
Ten years ago, Portugal decriminalized all drugs. One decade after this unprecedented experiment, drug abuse is down by half:"...
After Prohibition was repealed Mexico border towns and smugglers were expecting a recession. Luckily the Feds banned drugs so the smugglers and the former US federal law enforcement officers still had jobs. Back on topic: will legal MJ in Colorado increase consumption? And will it decrease the use of harder drugs or increase?
Thomas Sowell: There are no solutions, just trade-offs.