In Morrowind you can find Daedric at level 1. One of the exciting things about exploring in that game. You didn't know what to expect. And one of the design flaws of Oblivion and Skyrim. You can explore every inch of land in the game and still expect to find stuff suitable for your level. Even unique items/artifacts are leveled to your character, which is really, REALLY stupid.
I agree with you with the artifacts and items that are leveled to your character. For not finding Daedric items, it is probably because the developers did not want players to find the best weapons and armor so soon, and want the feeling of 'growth' in the game for your character. But to each their own, I suppose.
But having items leveled to your character? That means we have to wait until we are leveled up to a certain point in order to get the best version of a single item! That just plain urks me to no end, knowing that if I waited, I could have gotten a better, say, Nightingale Blade..