http://abcnews.go.com/US/story?id=90688&page=1

I tend to lean toward the fact that some addictions alter brains and brain chemistry, it's like saying all depression is wholly a choice and you just have to change to thinking "happy" thoughts. But I don't think we're smart enough yet to say which ones are mostly choice and which genetic or alterations of chemistry. My stepmother always scoffed and commented that the alcoholic didn't have to walk down the street the liquor store was on.