@Boernica,
you know, I have sometimes thought it would be nice to have a partner who is also interested in gaming, but reading your post, I'm seeing the advantages of being not being in that situation
@Alien_Newborn,
well I don't know... you get some pretty nice toys in the process of completing the main quest. Sunder and Keening anyone? Plus, if you go after Ur's vampire minions you obtain some fairly powerful jewellry, and let's not forget the Heart Ring Ur drops before heading into the final chamber..
My complaint is mostly that the ending of the main quest is so ho hum, which is likely related to the fact that there is no real pressure to get on with it. As I said, I love the open-ended nature of the game, but I do think that the main quest should have been a bit more prioritised, and the looming threat portrayed as being just a little bit more urgent.
More on topic, I think this is partly why so many of us have taken as long to get around to the main quest.