Here's a question for game developers:
Since you make games all day, do you get tired of playing video games?
Aspiring game developers ask me this every once in a while, but the only person I can speak for is myself! If YOU are a game developer, feel free to post your thoughts on the issue!
Here are my thoughts:
IF you feel that you don't want to play games in your free time, it's rarely because of boredom or an overdose of games, unless of course you feel like you've played everything there is to play, like all the games out there are the same - but that's not an issue unique to game developers!
A more common issue for game developers, especially in preproduction I think, is the blurring of the line between work and play. Are you playing this game for research? Or are you genuinely unwinding? I think it helps to play different kinds of games on different platforms. When I'm pwning zombies in Left 4 Dead 2, I'm unwinding. If I'm playing an iPhone game, I might find myself slipping into hmm... how did they code this? How can I create that effect in my games?
...in conclusion, game developer or not, you might as well read some books (I recommend the Picture of Dorian Gray), or turn on your TV (or Hulu) and watch some quality television like Psych or the Adventures of Brisco County, Jr. This way, there's a CLEAR distinction between work and play, and let's face it, you can never get bored of both Shawn Spencer AND Bruce Campbell!