Once Upon A Time?

"Once Upon a Time"... We've all heard of it, and we've all wanted it to be real at some point.  Some of us are even willing to put ourselves out there knowing there's a chance they may get hurt.  We put ourselves out there hoping there is another person out there that will do the same and we hope they will not hurt us.  We hope the person we want to start a "Once Upon a Time" with feels the same way as we feel about them too.  We hope that they will catch us when we fall and help us grow in many ways, but what happens when we take that leap of faith and hope that that one person is going to catch us but never does... Don't we just end up getting hurt?  So why should we start a story off with Once Upon a Time when there may never be a "Happily Ever After"?