People tend not to consider the positive impacts of gaming, but I think there's something to be said for MMORPGs. Runescape has a complex economy, captivating story telling, and complex inter-player dynamics - in other words, a consequence-free playground that prepares kids for real life.
When I first started playing the game, I remember spending many hours aimlessly walking around. It felt like I was an explorer of old; I'd come across something new every hour. That feeling persisted throughout the years as I unravelled new experience after new experience: learning to become a merchant, joining a clan, killing a challenging boss for the first time, and so on. Compared to the day-to-day boredom of middle school and high school, perhaps it is only natural that kids gravitate to these online worlds.