Rhabbi, I think it's true to say that authors (or any artist) aren't in a position to make that kind of judgement call. The 'giving birth' metaphor is true in this case. You've created something -- given it a life, as it were -- and now it's up to the readers to decide whether or not it 'works' for them. They each bring their own unique perspective to the story through which they make their judgements. Based on the foregoing comments, I'd say your story does indeed 'work', regardless of whether or not you believe so.
anonymouse