Well Tin, I think what you're trying to say is that addiction is not a choice. And you're right, it's not. Whether it's medically necessary or accidental, addiction sucks.
But as a rule, most people have options where they can take control of their addiction and find their way out of it, usually with the help of family and friends.
Now no doubt there are exceptions (for example required medication), but that doesn't negate that generally speaking, people have the ability to rid themselves of an addiction. However, blaming the substance will not put them on that path, it only serves to prevent them from taking control of it.