Cocaine too is not chemically addictive. But it can harm the weak as badly as alcohol does, especially in its quick-acting form, as crack. But illegality means that the party-goers' fun enriches criminals, a bad thing. Heroin is a private drug, and some peopie go on calmly using it for years. But it tips many of those who try it into hopeless inactivity.
Some party drugs can damage the brain.
The relatively harmless ones are often adulterated, and therefore poisonous. The trade in them should therefore be regulated, which means legalised. All these main drugs are at present unconditionally criminalised. Instead, different degrees of discouragement should be applied to each, according to its danger. We tax whisky more than beer, because alcohol concentrated by distillation is more dangerous than alcohol in a weak and nourishing fluid.