I love the darkness of an inside cabin. I wish I could obtain the "blackout" at home.
I'm also too cheap to pay for a view that I would never enjoy. We spend very little time in our cabin, so I see no point in paying for one.
If the upgrade fair visited me, I might accept her pixie dust just to try it out and see what all of the hullabaloo is.
I'd take 3 or more cruises with an inside cabin to your verandah or suite, thank you very much.