No. I don't think addiction is a sign of weakness. I think addiction is a result of a number of factors, including biochemical and structural brain changes, genetics, and environmental stressors. I definitely think that some people are more prone to addiction than others, and it's easy to interpret this as some being weaker and others stronger.
It's kind of a tricky question, though, because I do think it takes strength to fight addiction. So does that mean that people who lose the fight are weak? I don't think so--I think someone who can't kick an addiction can be just as strong as someone who does, it's just that their addiction is even stronger.
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