Using methadone to break free from heroin abuse is relatively painless, and will allow you to function normally in society. But methadone is in itself a very addictive substance, and a lot addicts who try to get off methadone remain users many years into treatment.
The seduction of pain medication. A slippery slope to addiction.
Thinking about getting off of pain pills, and thinking about detox and withdrawal and all of that - can be pretty scary stuff. Watching others take the journey - watching what they do and how they do it, can help to make it a little less frightening.