What is a really good MMORPG for a 12-year-old

Runescape is a good one, world of warcraft, dark age of camelot, warhammer online, archlord and im sure there are many more but these are my favs and my overall fav is runescape and i started that when i was 12
There are a lot of good sites that can provide extensive lists, just browse through them and you'll find what your looking for.