I know mate, its shameful.
When the govt controlled the supply of heroin it was in their and our interest to limit demand by offering support to come off the drug.
When that control was passed to criminals it is in their interest to create more demand, hence the rise of the user-dealer. Mr big supplies him with heroin (or coke or ecstasy or whatever drug you like) and in order to pay for it he has to sell some so he goes actively recruiting customers. In order for THEM to pay for it they have to either create yet more customers or commit crime. Typically robbery or burglary. And the cycle continues to grow. Yet more users, yet more often violent crime.
Meanwhile violent gangs get ever more violent in order to scare people away from cooperating with the police.
A video i once watched summed it up when an ex copper said If you lock up a burglar , burglary goes down in his catchment area. If you lock up a drug dealer the demand for drugs does not contract one iota, it just creates a vacancy for another, usually more violent, dealer to take his place.
In 50 years we have gone from being a country with hardly any problematic drug users or regular violent crime to a country with drug users in every postcode, almost every street, and an ever escalating cycle of more and more extreme violence on our streets and town centres.
All because the Americans wanted to criminalise drugs in order to still be able to control the black, brown, and yellow man after the civil rights movement grew exponentially and made every day racism harder to get away with.