Writing can also vent your emotions and express how you feel, even if nobody reads it. Not only can you express yourself you will become a better writer by writing more often. Writing also enable you to meet new people in yourself. These new people have different emotions that come from your inner self. I also believe writing can bring back memory's that you previously did not remember. Writing benefits yourself because the more you write the better you get at it the more highly people think of you. For example, if you write an amazing college letter they will think you smart. If you write a grammatically error free email to your co-workers they won't think your dumb.
As you can see writing is very beneficial not only to yourself and your mind but to everyone else people in work will use your papers as examples and be able to write better papers and the company become better. So there are many reason why writing is beneficial, but they are all equally important