I believe that death in sci-fi is very much like death in comic books: nonpermanent.
They used to say that only three deaths in comic books had to be permanent: Bucky, Jason Todd, and Uncle Ben. Reason? The deaths of those three characters were extremely important in shaping the heroes they were associated with (Captain America, Batman, and Spider-Man, respectively.)
Since then, both Bucky and Jason Todd have been resurrected.
Science fiction and fantasy are genres that allow for the non-permanence of death (especially Fantasy, and I consider Star Wars to be far more Fantasy than SF).
If we complain (for lack of a better word) when a dead character comes back in one franchise, why not complain for all of them? After all, Gandalf died in The Fellowship of the Ring, and they resurrected him. Same with Aslan in The Lion, the Witch, and the Wardrobe.
It was the year of fire… the year of destruction… the year we took back what was ours.
It was the year of rebirth… the year of great sadness… the year of pain… and the year of joy.
It was a new age. It was the end of history. It was the year everything changed.
The year is 2261.
The place: Babylon 5.