I don't know what to ansver, I
played morrowind on xbox first, a friend had it, and I was lost in it, I svcked hopelessly(I was 10 or something like that
), but just the huge world and everything in it made it awesome, I thought it was the most detailed game I had ever played, and it felt so endless, it was at the time I got lost inside vivec, and ventured far into the ashlands without a way back, getting 1-hit by mystical, seemingly godly monsters, searching out every house, everything. The game was the most fun that time, is just was epic.
I got oblivion when it came out, played it at the same friend(He's a huge video game freak, I normally don't play many videogames, only select few I
REALLY like) Played it a lot, and it was very fun, after some time I decided to get morrowind, remembering it very clearly, how huge and awesome it was for me that time. It never got the same, though, not as epic, not as endless, but I still like it a lot better.