Diseases of the Brain?

I think that addictions and personal failings are diseases of the brain. When I hear of a person with an addiction or an alcohol problem; I immediately think that it is their fault. A person chooses to have these addictions and alcohol problems. I know they might say they don't believe that it is their fault that they have a problem but it is. A person chooses to be addicted to something; they control the substance. The substance does not control them and this is why I feel that a person with an alcohol problem or an addiction problem started it themselves. They might think that another person influenced them into doing it but they are the masters of their own journey and of what they put into their mouth and body. A person might not feel like they were doing it by themselves but they are. I feel that rehabilitation centers are an absurd idea; a person does not need another person to try and make them stop taking something bad. It's either a person wants to stop or they don't. There is no in between area and a person can control them self.