This.
I was an avid Oblivion player for 2-3 years and then I decided to play morrowind. Despite the crappy graphics due to the fact that the game came out back in 02, the rest is simply amazing. And whoever says the ''graphics'' excuse that I hear all the time is a moron. Oblivion is 1/10 of what morrowind was. To reverse your sig, unfortunately, you dont 'live' oblivion. You beat it.
That's not true with all people. back in high school around sophomore year (05-06, around the Oblivion release), i sat in front of 2 guys in my gov't class who talked about morrowind daily, and i had never played it before. Well one of them became one of my best friends, and we started hanging out alot more, talking about Elder Scrolls and what not, but i had never played Morrowind, just Oblivion. Fast forward to now, (he didn't have a next gen system, or next-gen capable laptop until i got him a 360 off of retail loyalty about a year ago), so after logging an upwards of probably 2,000 hours on Oblivion, I'm jumping back to morrowind for story purposes (and im gonna try to figure how to play arena and daggerfall on my pc, but i can't seem to find a way to get them to boot on 7), and he's moving to oblivion after many years of morrowind... (and now, finishing my first point) after playing morrowind for awhile (and it's story is fantastic), I still live for Oblivion, because that was the first game of the series i played, just like back in the day, the first game i ever played and beat, The Legend of Zelda: a link to the past, is still my favorite in that series. (and of course my buddy's choice is still Morrowind, for the same reason)
So i guess i'm trying to say it's a mindset in some cases, and opinionated in others. to each his own.