Liberal drug policy is more freedom, less drugs with mixed poison inside, less criminality, less mafia, less costs for police, less checks on the airport, less fees for the checks, less costs for home protection, no dealer that want to hook kids on it, less people in jail and less costs, medical use: better treatment, cheaper, feeling better. If there is tax on it even extra income for the country. Even maybe more tourists.
Better for absolute everyone beside the drug mafia.
And that is also the reason why many countries slowly go that way.
And I don't use any narcotics and I would love if the addict can buy some safe drugs in the pharmacy instead of breaking into my house and give the money to some dealer.