Patients arrive broke, busted or abandoned at our methadone clinic in a raw section of Northeast Washington. They are opiate addicts, primarily dependent on heroin, though some take vast doses of street-bought painkillers like OxyContin. Drinking the pink methadone solution every day prevents withdrawal sickness. About half of our patients have also spent years on crack or alcohol. Not all have stopped, but at least they have cut back. We see almost no methamphetamine users, but that is a simple accident of geography - the corrosive drug hasn't yet reached epidemic proportions in this part of the country. The personal...