I’ve had TES3: Morrowind for several years. Got the GOTY edition. I finally figured out why I like it better than my recently-acquired Fallout 3. I’ve always been a fallout fan. Always. I cannot begin to describe the excitement I felt when I read the announcement of it’s developer. But playing through it several times reveals something: I liked Morrowind better. Chock it up to familiarity or memories of playing it on my first computer or whatever else, but I really do like it better. I finally figured out why: it places no emphasis on the main plot. F3 throws you into the main quest, Morrowind throws you into a town in the middle of nowhere and gives you a vague recommendation to head to Balmora (first thought: “Where the heck is that?”). Also, Morrowind changes your character depending on how you play. If you start out using Long swords and decide you like bows better, pick up a bow and start shooting things. Eventually you will be better with a bow than with a long sword. Fallout 3 also lets you do pretty much anything no matter your skills (aside from Terminals and Locked doors), but depends on you to increase the skills when you level, opposite from Morrowind, which depends on you to increase your skills to level.
Just my 2 cents.