The Positive:
Runescape actually taught me a lot about life. I first found out what mining smelting and smithing were from the game. the different types of fishing, and how to make archery equipment. How to bargain in the grand exchange and trade in the real world.
The Negative:
Runescape taught me what it was like to be addicted. I would literally be stuck to the screen after school, before bed, before school. I hated my life when i was so absorbed in the game, and now i know how to shield myself from such distractions.