Of course the famous fairytale ending is "they all lived happily ever after" which, as a kid reading the stories, I loved. Now? Love the idea of it but the reality of life is somewhat different! I have more sympathy now than I used to with those endings which are covered by the term "happy for now". It's certainly more realistic and fantasy/fairytales do have to have some realism in them, I feel, for people to be able to identify with the characters and want to read their stories at all.
FROM MY FACEBOOK POST
How to finish a flash fiction piece then? I like to end my stories with a punch or where the reader knows my character is wrong (or is about to be proved wrong) but they don't know.
You sense a story to come - and of course there could be. One of the joys of writing flash fiction is there is nothing to stop you taking a very short piece and expanding it into a standard length short story or even a novel. I tend not to as I am thinking of the impact of my initial story and its ending and don't want to lessen that (and I could easily without meaning to!).