In some circumstances, I think it's necessary. Should crystal meth be prohibited or allowed?
Look what Spain has accomplished by decriminalising drugs. The use rate is way down and the people in rehab has grown. The rate of infections via dirty needles is massively down too.
Yes, safer for the people who do use them, but that doesn't mean they should be allowed/regulated.
So it's safer but that doesn't mean it should be allowed? Hmm?
I don't care what Amsterdam enforces, why's that directly relevant? Can't you see the folly of directly comparing countries? Look at our attitudes towards alcohol - the same policies in the UK and France would lead to wildly differing results.
How is Amsterdam relevant? It's country that's had cannabis publicly sold in coffee shops for a great number of years.