Just started playing Skyrim for the first time last weekend, I played Oblivion meagerly back when I worked so much that I could barely game. I enjoyed it but never felt that invested.
With that said, I'm completely enthralled by this one. I seriously never can decide what I want to do. I go through phases where I want to work on smithing and enchanting, I go through miscellaneous quest phases, I go through pure hunter phases, I advance the story here and there, I sometimes just jump out of Whiterun and start walking around seeing what I can find.
I just love this game.
I hope the next game in the series takes an even more epic step. I'd love for there to be a more legitimate ecomony, more and better NPC's, more uniqueness among the towns, some sort of impact to your character by things like climate and weather, and some sort of multiplayer component.