Try league of legends. I used to hate the game. I was so used to playing wow, that I couldn't play anything else. Unfortunately though, this season has forced me to try something else. It's different, but you get used to it. And if you're even remotely good at wow (i.e- not a monkey), you'll be good at league.

Wow is like that girl that you love so much, but forces you to break up with her.