Why do people with addictions have a choice of treatment?

I watch Intervention on TV, and it amazes me that people with drug and alcohol problems are given the choice to go to rehab…..Obviously these people are not in their right mind…..so why do they get the choice? I am not saying food addictions or smoking should lead to your rights being taken away, but drugs and alcohol alter a persons mind to the point where I believe they can not be considered competent to make choices.

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