No, This has been studied, and over the past 20 years that drugs have been decriminalized Portugal has been seeing a 2-4% decline (each Year) in new users!
If Drugs Are Sold Like Alcohol, Won’t Everybody Become an addict?

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No, This has been studied, and over the past 20 years that drugs have been decriminalized Portugal has been seeing a 2-4% decline (each Year) in new users!