I don't, and it's the same reason I don't work out, or browse "dem Internets" every single day; too much constant strain and repetition will do more damage than good. Plus, one has to clean the mental filter every once in awhile.
I've seen this happen with writers too often; once it starts becoming an obligation, a compulsory task, all the magic and joy from the craft gets bled out, and it starts becoming a chore. Writing can't be work; work is a task that is mandatory. Writing is an author voluntarily exposing a piece of themselves for posterity. Their shout to the world "hey, I've got something say." But, when one makes it a point to try to say something constantly, even when they have nothing to contribute that particular time, it becomes empty. It's like printing too much money, or excessively producing any other good and service; it just devalues the quality of the product.
Some of the best ideas I get for material is during periods when I
don'ttouch a pen or a keyboard. I clear my head, absorb the world around me instead of trying to create one.
Go to the park. Catch a flick. Play with my baby nephew. Decompress once in a while. Mini vacations from nouns, verbs, and my delusions that my writs serve as something more than an excuse to avoid mowing the yard.
Then, of course, there's this crap normal people have called "a real life!" "Working." "Buying groceries" "Medical insurance." "I have to take my kid to the hospital because he accidentally drank anti-freeze, thinking it was Lemon Lime Kool-Aid."
I still make that mistake, even though by now I should have it embedded into my brain Prestone tastes NOTHING remotely like lemon lime!

Point is, it's not a good idea to write too much. Practice does make perfect, but too much practice makes a burn out. 5 days a week is my cap. Once you find yourself hitting a wall, take a break. It's okay to step away from the Word program, and clean the mental and spiritual filter out. A break from writing is permitted.
Now editing, on the other hand, you never can get away from that kid eating sewer clown.
The struggle to prevent too many semicolons and run-on paragraphs will be your burden until you die. Get used to it, soldier!