A $22.6 billion market!
When pot advocates like Marc Emery - the Canadian who ended up in a U.S. jail for selling strains of marijuana seeds over the Internet - referred to the illegality of smoking pot as "prohibition", a lot of Canadians rolled their eyes. The idea that smoking recreational pot is akin to illegal alcohol consumption in the 1920's and very early 1930s in the U.S. seemed a little rich.