Hmm, I used to be the solo type adventurer (Oblivion, Morrowind) and I also hated those quests when they shoved an NPC down your throat that you had to protect or lead. BUT... then I got into MMOs and it was fun to play with others and not be so lonely.
I actually love the ideas of the companions in Skyrim. At least they are smart AI's and go into sneak with you. Sure, they can break sneak, but I'm an "in your face fighter" anyway, so, if I do have stealthy missions, I just go solo. Other than that, I always have someone with me, when I travel around Skyrim (mainly Vorstag, my husband LOL) to alleviate the loneliness!

Now, the think Bethesda has to work on, is the inter-personal relationships. (take a slice from Bioware games, they do "romance" pretty well) LOL