We regarded opium as a godsend. It did not develop into an illicit trade, though. There was no legal prohibition, no police running around trying to suppress drugs, driving up the price artificially, and no marketing system. There were no distant markets to send it to because shipping anything was slow at best and often unreliable, and travel was something you just didn't do anymore. Anybody could grow their own poppies or buy raw opium paste from one of the growers. Farmers made more money growing raspberries or asparagus. They grew poppies as a public service. A few people took to smoking opium, but those with an extremely apathetic attitude toward survival tended not to last long in the new disposition of things.
Chapter 5, p. 30 - World Made By Hand (2008)