To show that change is possible. Star Trek is about hope.Why build a culture based in capitalism and greed if you're going to turn around and demolish it?
Or maybe Benny was an ancestor of Sisko's, or he's from a different universe/timeline and the prophets were connecting the two of them. His story ideas were just his subconscious seeing the future.If the Benny parts were real, and DS9 isn't, then why did I invest so much into DS9?
There are ways to make both real.