Hmmm, I find that odd. Is it a cultural thing I wonder?
I get both of your points- even from a Western perspective the "art of the tease" is somewhat lost these days.
My only question is about immersion (or "insertion"

) isn't it harder to put yourself "in" the (let's just say) MC, like in a visual novel?
You, I would imagine, watch porn for the exact same reasons that any of us watch porn (aside from being sad and lonely).

HOW can you "enjoy" what you cannot see once you get TO the action? I understand the censored/mosaic thing leading up to any type of "action"- it's the excitement, build-up, anticipation, and tension, BUT once it starts you still can't see anything. I'm having a difficult time understanding how you can still feel involved/immersed...
Were you there IRL- you'd get to see everything (unless maybe you have some sort of special blurry sex glasses you wear)?