There is a kind of helplessness that a man engaged in pornography exhibits. He often speaks of it in terms of a “struggle” or an “addiction.” Now both of those terms are accurate, I believe, but they distance a person from his sin in a soul-decaying manner. Pornography is not just an addiction; it is occultism. The man who sits upstairs viewing pornography while his wife chauffeurs the kids to soccer practice is not some unusual “pervert”; he is (like his forefather Adam) seeking the mystery of the universe apart from Christ. That’s the reason the one picture, stored in his memory, of that naked woman will never be enough for him. He will never be able to be satisfied because he will never be able to get an image naked enough.

Russell Moore, Tempted and Tried: Temptation and the Triumph of Christ