Writing

a person doesn't necessarily need to read in order to write. One could never ever read books and still write happily away. However, most fiction exists within some sort of literary tradition, and someone who never reads, say science fiction, decides to write a science fiction novel, it probably won't be very good, and will contain very trite ideas that have been written thousands of times in that field.

Also, to write good fiction, you need to be aware of things like pacing, and conventions for punctuation. A non reader usually won't have a clue about those things. I know, because I've tried joining writing groups wherein someone doesn't read, and boy, does it show.

If you have the goal of being published, other than self-published, it would behoove the would-be writer to read lots.