Then my question is "Why?" Why do you have Daggerfall and Morrowind on some similar level of greatness, when one could have come here several years ago and started a very similar thread about Morrowind haters, and think Oblivion was lacking? In which respects? Where do Daggerfall and Morrowind similarly triumph, particularly Daggerfall?
Do I need a reason? It's a matter of taste. My reasons may not be universal for anyone.
Daggerfall and Morrowind were both more complex, had more spells, more factions, less hand holding, they had politics, and they felt more rewarding.
Morrowind had a more unique game world than Oblivion, with more unique places to visit. Daggerfall did not have much detail in the game world, but compensates with it's incredibly huge size.
There was certain aspects with Oblivion that I did not like.
- Fast travel (I found Oblivion's fast travel less immersive than in previous TES...)
- Level scaling (...)
- Factions (too few, no conflics between them, no requirements...)
- Dungeons (not much variety, most dungeons looked the same)
- Quest marker (no searching for items or places anymore...)
...just to mention a few, there are more things I do not like about Oblivion.
Still, I do play Oblivion, I've put a lot of hours in it both vanilla, and modded Oblivion. There are mods that fix a lot of the things I dislike.
I don't want to start some kind of war here... I accept that you like Oblivion, just accept that I don't like it as much as Daggerfall and Morrowind.
In the end it's a matter of taste. I like my games to have more content, more complexity, and less hand holding.