And nearly all the quests in the game *can* be done without using the quest-marker, because the quest text tells you to kill someone or find something or whatever in XYZ place, and you can just look at your map and find XYZ place and then go there. Somebody responded to this point saying that this was just like having quest markers but harder, and what we need is verbal descriptions instead of map marks, but honestly, I rapidly lose sympathy at that point. If I were giving someone directions IRL to a place which was more than a short distance away, and they had a map, I would certainly show them where it was on their map, not give them convoluted directions with reference to landmarks I probably couldn't even remember.
Of course there are some quests which don't give a location (from memory, the Gauldur quest says "investigate the Gauldur legend", so if you want to deliberately set out to complete it, you would have to look at the quest marker, but of course you do have the option of just keeping it on the back-burner until you happen across a further clue), and clairvoyence really should be fixed so it works reliably, and those are real problems which ought to be addressed, but the OP does come across rather too strong.

