People can get addicted to anything. I am 22 and play wow, but I also am in college so I have to balance my time. The reason people play wow a lot is because it's a time consuming game. It's competitive, it has a real economy in it and that in and of itself can be engrossing. Not to mention raiding. These raids can take up to 2-4 hours. Of course most guilds (groups of players that play together) are understanding if you have to hit the sack or go do something, but some are not. Some people expect you to be on at a certain time to get certain things accomplished in the game. If you are not on, these things cannot be done. So a lot of the time it's frustrating when people that you are counting on don't show up. People don't want to be kicked out of their "group" because they might have played this game for 2 years with these people, talking, gotten to know them etc. They don't want to just screw them over and not show up, it's rude. So i can see why certain people can really get into it. The fact is, WoW is not just some "nintendo , singleplayer videogame" that you can just shut off. ( i mean you could, but the effects can be damaging to friends/other players who were totally counting on you.) That's why people play so much, etc. In my experience at least.