What your saying is that because you can see the The Great Wall of China from Google Earth, then you have no incentive to go there and see it. I cannot compute that.
I'm not talking about the great wall of china
It's like if you're in a dungeon, and you are told exactly where to go, what corners to turn at and what traps are along the way. Where is the exploration in that? How worth it will that reward be if you are told where to go? This is what it would be like exploring with the map (as it seems). It would be less exploring and more following a clear path to your destination. By then, you might as well use fast travel, since no geographic places can surprise you.
As for "being able to see anything durrp hurrp" (not saying you can see everything, but making a point):
The map that came with Morrowind (the paper map) actually allows you to see every dungeon (that can be access from the outside) on it. It even has little caves where the mines and caves are.
I wouldn't compare the outside map that came with the game with the ingame map (I would, personally, love a detailed poster/map, and to be honest, I was still plenty able to get lost with the morrowind one). The in game map would be like the outside game morrowind map, but it would show you exactly where you are, where you need to go, and its use would be unavoidable.