It's just that we have the bad habit of romaticizing nature, animals and their mistakes in general.
It's obvious that by its capacity, mankind has the chance of the most fuck-ups of all. Be it psychological, ethical, courage, stupidity of whatever: Because more complex things require high-maintenance, it has also the most chance to crash, and a most monumental crash. Take the ecosystems, which are so complex because spanning thousands of kilometers, yet when they go into entropy there comes monumental dread like floods, etc...
But take the animal realm: We don't kow what goes on their minds. To our mind, a society gone bad, a society gone sour, unethical, immoral, idiotic, is bad, terrible. But what of the animal that is mutilated? What of the animal that just wanted to chill and take care, of its family, of its friends, and endp up chewed in the mouth of some predator?
Things go wrong for animals also. It's just that our keen and sensitive aesthetic style coupled with our keen psychological sensitiveness + the denial necessary to maintain the social orderand the pecking order (studied among others by sigmind freud) makes it seem like we are hell bent, but isn't this too much of a satirical point of view? Can't animals have irony in their lives also? Or just us?