I’ve read stories with no dialogue in them. Some of the stories were very well written. I didn’t like them. I never got to hear the characters speak in their own voices. A story without dialogue is a constant reminder to the reader that someone is “writing” the story where as dialogue allows the reader to “live” in the story.
So, if you want the reader to live in your story use dialogue to bring your characters to life. Need examples of stories with dialogue in them? Check out the stories on this site.