Just don’t see the problem (for most). Yes, this can ruin lives like many other bad habits.
I would argue that in moderation some forms of porn use can save marriages. It’s just a fact that many men have much stronger sex-drives than women. If you’re wife has sex with you once or twice a months because she’s not in the mood enough (tired, raising small kids, etc etc)What’s the guy supposed to do?
So he has a few sessions with rosy palm and her four sisters once in a while. Isn’t that better than having an affair with all the associated risks (diesease, pregnancy, divorce etc)?
Some people watch porn with their wives as a marital aide. Are they sinning too?
I don’t think watching it together is bad.
Certainly is better than an outright affair as well.