There are certain types of people this works particularly well for. This group includes, but isn't limited to, lonely introverts or those prone to addiction. A normal person would go crazy (or get sick) if they drank, smoked weed, or farmed minerals, hides, or whatever you could think of in WoW for 10 hours straight. I know people for whom it's easy work.

Sometimes I'd go on group raids or arrange with friends to go to different lands as a horde/alliance (depending on which accounts the majority of the group was on at the time) and explore.