Did William Golding achieve his purpose in writing Lord of the Flies?

Golding ends Lord of the Flies like he does to overall expose us to the perspective an adult would have on the savage behavior the boys exerted. The boys ended up causing destruction, killing others, and losing all manners during this period of time. The naval officer is completely disgusted by the way they acted since being rich and intelligent British boys they were taught better. Overall he ends the book that way on account of irony.