I like what you say about any form of self-indulgence as a form of idolatry. It seems like pornography is such an insidious form of idolatry because it is a fast track to spiritual destruction (the terms are immediate) and even physical destruction since it can lead down roads of disease and decay. It is also a gateway drug of sorts because it can lead to other forms of abuse and addiction including recreational drug use to heavy-hitting-isolating-drug addiction.