Alternate ending.
Here's an alternate ending that I think should have happened.
The day after Piggy's death and Ralph is chased all over the island, he isn't seen under the tree by Roger. He runs to the beach. The other boys are way on the other end of the island, so it would be some time before they found him.
Ralph tells the Navy officer that it's only him on the island. There were two more, but they died.
Ralph is put aboard the helicopter. The helicopter takes off as the savages gather on the beach and watch. They are abandoned on the island and we are left wondering their fates.
Although the savages are initially shocked, Jack tells them that this is what they wanted: A dream world of no adults and no rules. The savages quickly get over it and resume hunting.
Is that how it should have ended?
Would it be realistic enough?