I strongly disagree. Yes, most substances should be decriminalized. But they should not be completely deregulated. Not even alcohol or tobacco are deregulated. And for a good reason, we don't want to give 10year olds free access to alcohol for example.

Many drugs should be taken only under supervision of a medical professional. So the current system of doctors and pharmacies overall is a good system. We might give pharmacists more powers - they tend to be more knowledgeable about pharmaceuticals anyway, but drugs don't belong on supermarket shelves.