If I found out a man I was involved with was watching women being fucked for money, that would be the most massive turn off ever.
It's not very cool these days to say that one finds porn utterly offensive, and sad, and feels sorry for all the lives caught up in this shifty shitty 'industry'; not to mention the marriages corroded by its toxicity.
Not being able to say this easily is such a shame. I wish more women, and men, could say watching women be put in degrading and dehumanizing positions is so offensive.
Is there a reason men can't wank without a sound track? I could not trust a man who had such a low opinion of women.
I hope OP you will get something out of this thread, I hope you will figure out what you want out of life. I hope the future for you will not include watching random women being fucked by random men.
It may be possible for your wife to trust you again bit it won't be because of some trick you can pull or some arguments you can pull out of your hat.
Your only real hope is to become a man worthy of trust. I do hope you will do that even if it is not with your current partner.
And by the by I am not really down on men who cheat, or women who cheat, I don't think it is the worst crime in the book! But it's not about what bothers me, it's what bothers your wife.
And I know you have not cheated anyway, but you wanted to. Why not explore those thoughts (I mean 'why' not fantasizing about it.
Work out what it is you really need to be a man of integrity. If this is all genuine then I do genuinely wish you all the best.
But it has to be a change of heart, not just of current actions, IMHO. Because character comes from within. if your wife sees a real change, she may feel differently. But if it is just to get more sex, she won't be convinced.
Good luck. 