Agree fully, but I would like to see well constructed arguments backed by evidence and facts as to how, when drug use is decriminalised, we would prevent an increase in addiction and inappropriate use.

I am sure you know this, but in the USA, the abuse of prescription drugs is as big if not a bigger issue and problem than the abuse of illegal drugs.

That suggests perhaps that the legailty or illegality is not the core issue or even perhaps an issue at all.