[bit-anarchist]

> We don't know how much higher the drug usage would be if all drugs were legalized.

Given what we know about the prohibition era and insights about the success in the fight against drug abuse, it's a pretty safe bet.

> That's an extremely general statement which is almost certainly wrong.

Is it? Even the most successful countries, like Japan and Singapore, seem to have low drug usage despite of criminalization, not because of. Even then, the data is murky, because criminalization of usage incentivizes low self-reporting.