When it comes to video games of any kind I think actual age is irrelevant. As long as you feel young enough to play then I say go for it. How I got my one kid to read was thru video games. She saw me and my sister playing one of the early final fantasy games on a snes and wanted to play. She was being difficult with school and learning to read so we told her she could only play if she could read everything herself and made her read it out loud to us. Gave us some family time together and got her to read. We've been playing video games together ever since including WoW.
Just for the record..I'm 40ish and my kid is an adult now.