How common is drug abuse?

Very common: Unfortunatey, the usa is a country plaged with both prescrition, and nonprescription drug addicts. Many of these individuals or occupying space in overcrowded prisions, others are at large, perhaps homeless, and using criminal means to support their drug habits. The war on drugs has failed horrably, and due to past misguided effects to erraticate cannibus, the real threat today crystal meth.