Headcanon: Star Trek: Deep Space Nine
SPOILER WARNING
I just finished re-watching all of Star Trek: Deep Space Nine.
I've decided the ending was slightly different than what actually appeared on screen: Benjamin Lafayette Sisko died.
When he threw himself off that cliff in the Fire Caves and took Dukat with him, his physical body died; however, the wormhole aliens (aka The Prophets) managed to save his mind/soul by communing with him one last time as he fell. He now lives on forever in their plane of existence (The Celestial Temple/The place inside the wormhole) as a soul. The Prophet told him: "You're with us now." That's what she meant. And because Dukat was always meant to serve as Ben's antithesis, this mirrors Dukat's own death so that he could become an avatar for the Pah-Wraiths: Benjamin had to die so he could ascend to the Celestial Temple.
Despite what he told his wife Kasidy Yates-Sisko, he isn't coming back. In fact, canonically, he never has come back in the last 25+ years of Star Trek. If he was going to, some show/movie between 1999 and now would have mentioned something about it, but they haven't. And because the novels and comic books aren't canon, my headcanon fits. Also, the pseudo-episode for "Season 8" they thought up during the documentary "What We Left Behind: Looking Back At Star Trek: Deep Space Nine" isn't canon either because it was never produced.
I'm saddened by his death and I mourn his passing, but it makes for a more powerful ending than him simply taking a break from our reality to learn from The Prophets. His sacrifice is worth more. The finale is that more poignant. He didn't just save the wormhole aliens, he saved the Universe; at a cost: He had to permanently give up his physical form (Loophole: He could potentially "possess" someone like a Prophet possessed Kira in the episode The Reckoning.)
He eventually will become much like the wormhole aliens due to spending eternity in their plane of existence and experiencing their reality. This means his way of thinking, feeling, and being will change. He'll eventually forget how to experience linear time or what it's like to have a corporeal form. This is to be expected as he will live on forever as a soul/entity/ghost/non-corporeal being. One wonders if this is something the wormhole aliens regularly do: Recruit new members among their ranks by plucking them from their native reality (I'm assuming they have access to more realities than just ours.)
This all recontextualizes the last shot of the finale and makes it more significant: One of the last things we see is Ben’s son Jake looking out one of the windows of DS9 at the wormhole. He isn't just looking at the wormhole. He's looking for his dad. He's looking at where his father now resides; like visiting a deceased parent's grave. Poor Jake: He still ended up losing his dad like in the episode The Visitor and he misses him. Kira tries to comfort him in that shot, but it's hard to comfort someone after they've lost another parent (His mom died at Wolf 359 years before you'll recall.) This is going to be hard on Kasidy as well, as she now has to raise a baby by herself (I'm sure Jake and his grandfather will be willing to help.)
Their grief is a little more complex too, because Ben isn't completely gone: He's just out of reach. The wound of his loss can never fully heal because he's still near. It's similar to how Worf still mourns the passing of Jadzia, but Ezri is still around. Gone, but not completely. It's bitter-sweet. A pain that can't fully resolve itself. Stuck somewhere in-between. Just like Ben.
What an amazing show.










