What are your thoughts on a story that lets the audience know the ending up front, but focuses the story on how it gets there, rather than leaving it a mystery where it's going?
I ask because I'm working on a big incest/group sex epic, involving a dysfunctional family gradually coming together by forming incestuous relations with each other, along with some other families that they're friends with. I currently have written a prologue that depicts the multiple families all together in a big orgy, then for the first chapter it flashes back several months, making the arc of the story all about how they got to this point.
I've been debating whether or not to include this prologue in the story. Does it harm the story at all if the audience knows the family is going to get together in the end? Or does it create a sense of anticipation by making the audience want to know how we got from A to B?
What are you thoughts? Which is more important, the destination or the journey?