This is also why alcohol, which is a way more harmful drug to others than all of the illegal drugs[1], is legal.

[1] https://pubmed.ncbi.nlm.nih.gov/21036393/

Findings: MCDA modelling showed that heroin, crack cocaine, and metamfetamine were the most harmful drugs to individuals (part scores 34, 37, and 32, respectively), whereas alcohol, heroin, and crack cocaine were the most harmful to others (46, 21, and 17, respectively). Overall, alcohol was the most harmful drug (overall harm score 72), with heroin (55) and crack cocaine (54) in second and third places.