I agree with your last comment. You do have to do it for you.
But I did become a vegan because I didn't want to be responsible for animals pain. It is a lot easier than I ever thought it would be. (Way easier than quitting PMO)
And hearing women talk about and write about their stories during porn affected me as well. I of course didn't stop after that because I was an addict and after the first minute who notices emotions watching porn anyway.
I read those in late 2014, over 2015 I started to notice so much more shit I never cared to notice before in porn. The illusion of porn's sort of false reality has been completely broken for me. I'm so disgusted by porn right now and it being the only thing I can remember being with me for most of my life, it feels like it links the chapters of my life together. I turned 25 last year and I can now see how porn has sabotaged my life (I mean I did of course) but I've been looking back at past relationships (and friendships) and realising many times that emotions I felt, the hatred of myself and I'd often feel depressed. I sabotaged so many relationships for no good reason. Were mostly due to me internalising the emotions that I was getting from the women in porn. And because I didn't realise I was taking them in, I never dealt with them. The look a woman was giving to a man or men I'd never met in a situation I was never in. Became attached to my emotions and sexuality.
I don't think I would have ever broken out of my porn habit without the women's stories humanising the women in porn. Because I've wondered if I had a problem with porn for years probably since age 16 - 18. (Addiction always seemed overly dramatic, I used porn at most once a day, even often a few days a week. Until 2013 - August 2015) People always say "think of your sister, girlfriend, wife, friend, etc. doing porn" and It never worked because you don't associate most of the women in your life with pornstars, or at least I didn't. So it is impossible to imagine them doing it.
Anyway sorry for the abridged life story. You do have to do it for you. But I hope this explains why it does help and In my case probably needed.
It is 12 minutes from day eight and I've not even thought about watching porn once. I'm happier than I've been in years.