At the end of Season 7, Sisko goes into the wormhole to become a prophet, and Odo goes back to the great-link to re-join his people. What I don't understand is why both of these events were mostly portrayed as events where they weren't going to be seeing their respective loved ones again for a very long time.
With Benjamin Sisko, they did have that line of dialog that suggests he would come back at some point, but from what I understand that line was a last-minute addition at Avery Brooks request because he did not want his character to be portrayed as an African-American male abandoning a wife with a newborn baby. It was indeed the writers intent for him to pretty much not ever come back. Yet we have a LOT of precedent that suggests prophets can leave the wormhole, or simply communicate with those outside the wormhole, pretty much any time they want to. In addition, for those who want to communicate with a prophet, it seems like it's just a matter of either finding an orb, or at worst, simply taking a ship and flying it into the wormhole. I don't recall it ever being established that there was a limit to how often this could be done. In the case of Kasidy Yates or Jake, I never understood why they couldn't simply use one of these avenues to communicate with Benjamin Sisko basically every time they wanted to; perhaps even every single day. This realization of course would have made his departure much less dramatic.
With Odo we are in a similar situation. He rejoined the great link, but we have established on many occasions that changelings can join and leave the link basically whenever they want to. DS9 seems to be fairly close to the great link as it never takes them long to get there in a ship in any episode, including the last episode. There doesn't seem to be any road block that would have prevented Kira from visiting the great link whenever she wanted to. Granted, a "long-distance relationship" probably would not have worked with him living in the great link and Kira simply visiting (or vise-versa), but the way it was portrayed was that they would not even be seeing each other again at all, not even as friends, for a very long time if ever. Why?
This all just kind of comes off like parents who give their kid a tearful sendoff to college - even though the college is still in the same city that the parents live in.
With Benjamin Sisko, they did have that line of dialog that suggests he would come back at some point, but from what I understand that line was a last-minute addition at Avery Brooks request because he did not want his character to be portrayed as an African-American male abandoning a wife with a newborn baby. It was indeed the writers intent for him to pretty much not ever come back. Yet we have a LOT of precedent that suggests prophets can leave the wormhole, or simply communicate with those outside the wormhole, pretty much any time they want to. In addition, for those who want to communicate with a prophet, it seems like it's just a matter of either finding an orb, or at worst, simply taking a ship and flying it into the wormhole. I don't recall it ever being established that there was a limit to how often this could be done. In the case of Kasidy Yates or Jake, I never understood why they couldn't simply use one of these avenues to communicate with Benjamin Sisko basically every time they wanted to; perhaps even every single day. This realization of course would have made his departure much less dramatic.
With Odo we are in a similar situation. He rejoined the great link, but we have established on many occasions that changelings can join and leave the link basically whenever they want to. DS9 seems to be fairly close to the great link as it never takes them long to get there in a ship in any episode, including the last episode. There doesn't seem to be any road block that would have prevented Kira from visiting the great link whenever she wanted to. Granted, a "long-distance relationship" probably would not have worked with him living in the great link and Kira simply visiting (or vise-versa), but the way it was portrayed was that they would not even be seeing each other again at all, not even as friends, for a very long time if ever. Why?
This all just kind of comes off like parents who give their kid a tearful sendoff to college - even though the college is still in the same city that the parents live in.