We are closest to Ralph’s viewpoint throughout the novel and feel the most sympathy for his character. We want things to go Ralph’s way, are we’re relieved for about half a second at the end of the novel when we think they will. Then we see the “trim cruiser” in the distance and feel bad again.
Ralph is also a realistic character. Just like everyone else, Ralph has those moments of guilty, primitive, pig-hunting indulgence, which reminds us that all men, even protagonists are imperfect.