Pubdate: Wed, 11 Aug 1999 Date: 08/11/1999 Source: Los Angeles Times (CA) Author: Don M. Howard The sentencing of Robert Downey Jr. to three years in the penitentiary is just one more example of our barbarous approach to the drug problem in this country (Aug. 6). Fifty years from now they will look back on these times and shake their heads in disbelief that we put people in prison for addiction problems, instead of offering treatment for what is a health not a criminal problem. The war on drugs is a total, miserable failure, and you need look no further back in our history than the pathetic attempt at prohibition of alcohol in the 1920s to see what a doomed policy it truly is. Prohibition didn't work then, and it's not working now. DON M. HOWARD, Oak Hills