Perhaps it all comes down to assessing what a society deems as the difference between enforcing Order and Justice. By the current laws, the police should be prosecuting these crimes as they are on the books. Justice. But Order is a more slippery slope. When I first moved to Los Angeles in 1997, I went to change my auto insurance provider. My new agent talked me through things, and asked where I had moved from (He was from the Midwest). He then advised me "If you get in a wreck. Just get the other party's insurance info. Don't call the Police. They won't come. They're too busy dealing with violent crimes." Order I guess. Out here, it's not really deemed as enough of a threat to the social order to be worth spending resources on. I could really care less whether someone purchases or smokes the stuff, so long as they don't do it and then get behind the wheel or go to work, just the same as I expect people to treat consuming alcohol.