Personally I hit a bit of playing burn out when the Sisters codex dropped and they failed to change things again and my army list didn't gain any options for the third codex in a row (plus I moved from NY to MT in March 2013). I'm finally starting to get back into wanting to play again now that I know what I want to play now (I tend to settle into an army and play it for a long period of time without switching which means I'm very bad at initially picking said army).