I enjoyed the story. The social element of different "classes" of society using different drugs was interesting (and indeed reflective of modern society), but was not really explored. For me this raises the interesting question of the Lotus Eaters from the Odyssey, i.e. if there was a drug that you could take that would make you 100% happy all the time with no down-sides, would you take it? To me "Flame" sounded like the ultimate Nirvana drug, and I think I would probably take such a drug even knowing the consequences to my physical body.