probably because they don't know about it. I could have gone longer without knowing that, to be perfectly honest.
Meh, I thought about it recently and came to the conclusion that I love RPG's for the sole reason that they're pretty much just interactive books, and I've always loved books. I don't believe that video games melt your brain, because there are a lot of things worth learning from them. Take for example some of the threads on this message board such as the ones we have with people arguing about the nuances of time travel, etc. Very informative and highly intelligent, which would be very impossible to have if video games melted our brains.