So, how many lemmynsfw.com communities have you blocked?
I just reached 112 myself.
I'm very much awaiting a time when users can block specific instances. I still don't want to check the option to hide NSFW content, because I do want to see NSFW content that may show up on non-porn communities. Just not really interested in seeing so much porn in All.
You can check on your settings page, btw, in the Blocks tab - count quickly with Ctrl+F.
Why is it wrong? You're not cheating. It's just fantasy. I haven't stopped noticing other women who I think are really attractive either. I just don't try to fuck them. Doesn't mean I can't imagine what it might be like.
Coincidentally, tomorrow will be our 23rd anniversary. You don't stay married 23 years and never fantasize about what it might be like if your life had been different and you had been with a different woman.
I'm surprised you see it as prudish not wanting your SO lusting for and jerking off to other women having sex. Why not attend strip clubs too. Watching some women dance is tamer than watching them have sex.