Is there a point in writing stories that others might not read?

I write fiction as a stress-release. However, I do not plan on having my fiction published. (I have tried once before and it did not work; no publishing house wanted my manuscript.) The only people who would read my fiction would be my family and myself, and my family is always busy.

That said, is there any reason why I should continue writing? Or is it just a big waste of time and I should move on to something else?