[bigyikes]

i’m not sure whether there’s any physiological basis for this, but subjectively having an addiction feels a lot like having an additional need in the same vein as hunger and thirst. The addict’s mind is convinced it does “need” the substance.

[baq]

It’s worse than that for e.g. alcohol and opiates. The organism lets the addict know in no uncertain terms it needs the substance. It’s not a choice the mind does unless you’re a zen master or something.