guyde:
Do you find that when you have written your first draft, you know, deep down inside that the tale is not one you are going to go back to rework into its final form?
Actually, NO! For any individual unfinished story there is no way for me to know any such thing.
Yes, I start more stories than I finish (who doesn't?) and yes, unfinished stories can languish on my drive for years. But occasionally something magic happens; an unfinished story will suddenly become relevant, explode into new life, and be released. My entry into our "Summer Vacation" contest was such a story.