This is a space to share what I feel about writing not only the short story, but the novel as well. Even the best writers see things they can improve upon. They can grow in their perspective, or change it entirely. A writer's satisfaction with his work may become greater than when he started out. He may become more skilled in his writing, a very good thing. Developing is the best word to use here. It is what separates the good writers from the not so good. 

I have heard many times that a writer should write for the reader, or a variation on that statement. I will not diminish this, but I disagree with this being the only reason to write. Write for yourself, in the sense that you should strive to be pleased with what you produce. If you can say this, and say, "I feel good about what I've done," you've done a very good thing for yourself. You may find others agreeing with you, and this may spur you to be a better writer. 

I wouldn't be surprised if many a published author writes, in part, for themselves. Being proud of what you do, with having your name associated with a your work, whether novel or short story, is a good thing to strive for. There's no reason you can't help you editor along by letting him or her see a polished manuscript. You can write as if you were the editor, a challenge worthwhile. There are benefits to writing for yourself. Be careful, though. Published writers have readers. Your first reader just might be that editor you're hoping will look favorably upon your story or novel. Followed by the reading public. Keeping your potential reader in mind may be a good way to proceed. You want to publish. These ways, plus others, might help you to get there, and are additional challenges that may be worthwhile. 

What if your goal is not to publish? Yes, you heard this right. Expressive writing is a truly meaningful type of writing. It is where writing for yourself has a firm hold, casting no shame upon the writer. Expressive writing is personal writing. Emotional writing. And, in the case of the victimized, writing that  heals. It is also non-judgmental, where the purpose is to help the writer. I firmly believe in this type of writing.