Shutdown from steroids and PHs is a bit different than natural supplements; as you mentioned, they can shut you down, and steroids are considered drugs. My point is that if you consider everything to be "addicting," from Oreos to video games, coffee, etc, it just diminishes the label/classification. From a practical perspective, focused largely around legislation, classifying everything that people like and want to do as addicting simply doesn't make any sense. I suppose that from a philosophical perspective, or just for the sake of discussion, you could say that you could become dependent or reliant on a lot of things, but I think there's a difference between saying stay away from addictive substances (cocaine, painkillers, etc) and take care to not become dependent or reliant on something (video games, cookies, etc).