Well, even if it doesn't change much, you're still stuck with the absolute worst part of drug prohibition – unregulated and unclean drugs, turf wars and violence, and hundreds of thousands of murders in less fortunate countries.

I find decriminalisation to be a pretty egoistic way around the problem. Sure, it makes lives better for people at home, but it completely ignores the massive amount of suffering countries (including Canada) has brought on supply and transit countries.