I'd like to agree with TFA. The more I wreck my brain at work, the more likely I am to give it a break at home. On the flip side, The more bored I am from 9 to 5, the more likely I am to want to challenge myself.
Just in the same way as I find myself more drawn to do carpentry or art work, when I've been fillout forms and doing repetitive, monotonous tasks at work just to get the feeling of "creating something." You've gotta flex all the "muscles" of your brain to get a good workout. Mashing buttons and using quick reflexes are just as important as creating long term strategy, or plotting which Civilization to play politics with.
Life is all about finding that balance, and sometimes games vs reality is a great way to do it.