Sometimes you need to write on something that will lead nowhere. It could be in a genre you haven’t written in, a topic or subject that gets you writing that can include a picture or word prompt. It gives you a break that could open the door to more opportunities as well.
NaNoWriMo has done that for me. I have won three times. One person told me if they did not lead to publication, what was the point? A valid point if that was my goal for NaNoWriMo.
Trying something new is less stressful if it leads to nothing and you are doing it just for the fun of it, to express yourself and enjoy.
NaNoWriMo has shown me that I can write in different genres. I can write a novel that is in 70-100k words and more. It has given me a new outlook on what I can do as a writer.
To me, that is worth the long hard month of getting NaNoWriMo completed. I know someone who structures it as Need To Write More November, which is a great goal if you are trying to complete an existing manuscript or getting in the habit of writing more.
If nothing else, writing with no intention of where it will go keeps me in a writing spirit that could lead to nothing or something.