Should I write a story if I never plan on showing it to anyone?

I want to write a novel. The story has been living in my head for years and I have slowly been mentally working out details. I dont feel as though i

I want to write a novel. The story has been living in my head for years and I have slowly been mentally working out details. I don't feel as though it would be good enough to show anyone. Should I continue working on it or should I focus on more productive activities?

or:I want to write a novel. The story has been living in my head for years and I have slowly been mentally working out details. I don't feel as though it would be good enough to show anyone. Should I continue working on it or should I focus on more productive activities?


or:Yes. A lot of people do that and it is considered an unexpected joy when the family discovers it after their death.

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