Bad neighborhoods cause addictions. Emotional and physical abuse cause addictions. Bad upbringing causes addictions. Addicts have underlying mental illness. There is an addictive personality.
Addicts are immature.
Addictions are caused by emotional developmental trauma that must be identified and overcome. Addicts are bad people. Addicts have bad character and character defects. You can't trust an addict. Once an addict, always a scumbag.