Man they say is a discontented animal. He desires one thing and when he finally gets it desires another. While it is something innate in him to be able to survive and better himself, it has often become a source of unhappiness, for discontentment keeps a man from enjoying what he possess.
Here is one poem and a series of illustration which shows why man is the perfect example of the irony of discontent. Read on and agree or disagree.