If I'd said that I saw drug use as a major problem in society, and drug addicts as shameful outsiders perhaps you might have a point there, Michael.

But I don't. I see drug use rather as a lifestyle choice, though one which is often very foolish and can involve serious health risks. I see the way the way society deals with it as a very serious problem, with very harmful consequences. There is an analogy with the way it dealt with people with gay orientation a few years ago, when it was criminalised.
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I think it is important in a discussion to distinguish between what adversaries have actually said and what we believe are the implications. That is not pedantry. It doesn't mean that it is wrong to point out the implications we believe need to be drawn.