Did you like the way the novel ended? if so, why? it not, what chnges or additions would you like to have seen?
I like the ending to the story just fine the way it is. I think that it does a good job of giving us some hope without seeming too sappy and forced.
I think it is good that the novel ends with the "bad" society having been destroyed. I think that gives us some hope for the future. I think that it allows us to think that things will be better.
However, it does not just say "they lived happily ever after." Instead, the ending acknowledges that there will be a long and difficult process of trying to rebuild a better society. There is no guarantee that things will work out.