@jkb have you seen Trainspotting, or read the book? I have known many people on methadone, and they will tell you that Irvine Welsh was not exaggerating. Coming off opiates isn't just vaguely disappointing. It's a living hell. Speaking of which, Hellraiser is another film and book inspired by experiences of coming off opioids. I have tried many drugs but I would never go near them.