Humanity’s general addiction (not accusing anyone here) of being addicted pornography is side-effect of the evolutionary necessity for self-preservation. (Or rather the preservation of our genes.)
However, I am not endorsing pornography or condoning in that statement…
Wanna know why oxygen is so addictive?
O[sub]2[/sub] + 4e- + 4H+ ----> 2H[sub]2[/sub]O
E´0 (V) = 0.82 V
Electrons are derived from foodstuff… the electrons from food are transfered to NAD+ and FAD to form NADH and FADH[sub]2[/sub] respectively. Laconically the high energy electrons from the aforementioned reducing agents and the energy produced from reducing water is used to pump protein against a gradient thus driving a molecule ATP synthase to create a high-energy phosphoanhydride bonds in the ATP molecule from ADP and phosphate.
Got a better electron acceptor than oxygen that we can use?
What could be gained by sublimating our base appetites to our will? In secular terms - immense power and self-mastery.
I recall a passage in one of C.S. Lewis’ books where he explains that to struggle against ‘sins of the flesh’ is often a safer thing then to truly overcome them and become tempted to more malicious sins, motivated by the naked will rather than concupiscence. That would be like replacing the ‘animal self’ with the ‘diabolical self,’ capable of much greater damage to oneself and others. The most notorious sinners of history - Adolf Hitler, for one - are often noted for their extreme, even obsessive and neurotic, asceticism. Ascetics makes one powerful. This is why Christianity has, as an essential element, the war against self-pride, and emphasises humility as the mother of all virtues.
I always thought self-mastery to overcome our animal instincts was an extremely virtuous aspiration.