Drugs should be legalised, regulated, and taxed

Criminalisation of drug use has never worked in the West because it has never been done properly. People receive slap-on-the-wrist punishments because we are afraid of punishing anyone properly. Drug use is also glorified by celebrities, the movie and music industries, music festivals, dance parties etc. Drug use is normalised, people are unafraid of the punishments, we think decriminalising drug use will solve the problem? The solution must start with a cultural change, however criminal sanctions must remain as a deterrent.

One word: Singapore

Go and look up the statistics on illegal drug use in Singapore and compare them to any number of Western countries and then come back and argue that criminalisation and heavy punishments (death penalty) don't work.
(Hint - it's not a small difference. It's an "orders of magnitude" difference.)
They are still affected by the same music/media culture as the West, yet the rates of use are extraordinarily low. There has to be something there worth investigating.