It's why I have 5 or 6 stories started for every one I've finished. Silly might be too strong a word, but I'm the kind of writer that just starts writing from the merest germ of am idea, then see where it goes. Most don't, though a few of them I've come back to with fresh eyes after a year or two and saw something in it I didn't see before. The last story I posted was one of those.