He was a friend. In the end, his character lost so many levels that he couldn't keep up with what we were doing so he stopped playing his character and his character wandered off with a party of NPCs we'd befriended. We gave them all our second hand magic loot and sent them to do the quests we were too busy to finish. (Which is why I don't have to suspend disbelief when high level NPCs ask low level PC groups to do quests.)At a certain point, you should be asking the party "Why the heck are you still bothering with this guy?" But the probable answer, no matter what they come up with, is PC Glow, and I can't help but believe that most people who play the "its what my character would do" card count on that.