Why? Here are several plausible causative links: * Addicts are more effectively targetable for interventions to reduce or eliminate addiction. * A safer envir

Why? Here are several plausible causative links: * Addicts are more effectively targetable for interventions to reduce or eliminate addiction. * A safer environment may reduce other pressures that cause addicts to keep resorting to addiction. * Supervised injections may let you go onto a schedule that lets you slowly wean yourself off of addiction. (e.g., using naloxone and methadone in lieu of heroin).