I find it ironic how just as Ralph is seemingly doomed at the end of the book, a naval officer appears before him and all his hope is restored. That was extremely lucky on his part also, to be able to crawl onto the beach and being in the right place at the right time. I know he was trying to figure out what a "sharpened stick at both ends" meant. I deciphered that the savages would eventually get to have those cannibalistic urges after reading about what they allowed themselves to do with Simon. .
Also, Jack really wants this boy dead when all Ralph wants to do is get rescued. I would have been glad enough to let Ralph join my group. It would be beneficial in the end to have more workers anyway. It's sad to see how all the desperation in their situation can lead to someone like Jack gaining control of everything and brainwashing most of their minds. Then again, Adolf Hitler was able to do just that. .
Now at the end of the book, they are finally able to go home and lead a happy life. Unfortunately, they have all this guilt and horror of their savage undertakings hovering over them probably the rest of their lives. I believe they sobbed not just out of the joy of being rescued, but of the "innocence" for which all of them lost while on the island. In my opinion, that kind of guilt and memory is worse to live with than to have died on the island so instantaneously as Piggy did.