It’s not about permanence and never doing it again. It’s about gaining control of that part of yourself. After that, when you choose to release it’s of your own control and you understand the mental/physical effect it will have on you (relaxation, regret, satisfaction, loathing, whatever it is for you). It won’t be because it’s something you have to do whenever you’re horny or see an image of a woman that turns you on. It also helps hone your self control in the presence of women in real life. That’s what I think dudes are experiencing when they say women are more drawn to them when they NoFap. They’re exuding the confidence that a man naturally feels when he knows he’s in control of himself and women take notice of this.
The very act of developing a “discipline” around anything you enjoy inevitably transforms the way you think/live whether you believe it the biochemical, spiritual side of it or not.