It could be possible. I once stayed on the computer for a day and a half. (Not literally...I would stay on the computer from 6:00am to 2:00 am the next morning, then would sleep and repeat. I did this for about 2 days. As you can see, it's 2:02 a.m. right now, and I'm still on the computer. With this experience, I can see how someone can become addicted to the World of Warcraft game, and eventually die. They might be a "little" bit on the insane side, but I think it is possible.