Zoos are becoming facsimiles - or perhaps caricatures - of how animals once were in their natural habitat. If the right policies toward nature were pursued we would need no zoos at all.
I think sometimes all you need is to hear someone else say the same thing that you're going through to realize that you're not alone. I try to put some sense of hope into the songs into whatever the situation is so that it's not just dirt drudgery and a life of misery.