This is the justification for the imposition of the death penalty for narcotics crimes in some countries. The penalties are often harsher than other heinous crimes such as murder or terrorism which, in some cases, can attract leniency or even a royal pardon after serving a portion of the imposed sentence. Drugs are seen as a causative element or a precursor of more serious crimes (such as the tragic incident reported above) and a destroyer of lives.
As an example, in Cambodia a man who murdered his wife was recently sentenced to 15 years whilst a syndicate of narcotics manufacturers was meted out 33 years each with fines of $20k each, effectively prolonging the custodial sentence if it is not paid . As one can see here, the disparity shows the court's fundamental antipathy to narcotics crimes when compared to even the most cruel and barbaric cases of homicide, volitional or otherwise.
The misuse and abuse of drugs can end innocent lives. This is why, yes, certain drugs must remain regulated, legislated and criminalized.