But then, of course, it could have been worse. This may not be the best of all possible worlds. But Pangloss never met Murphy. And things could have … - David Brin

Freedom was wonderful beyond relief. But with it came that bitch, Duty.

Of course, sometimes a species’ invention only benefited itself. Goats developed an ability to eat almost anything, right down to the roots. Goats proliferated. Deserts spread behind them.
Then another creature appeared, one whose originality was unprecedented. Its numbers grew. And in its wake some other types did flourish. The common cat and dog. The rat. Starlings and pigeons. And the cockroach. Meanwhile, opportunity grew sparse for those less able to share the vast new riches—huge expanses of plowed fields and mowed lawns, streets and parking lots...
The coming of the grasses had left its mark indelibly on the history of the world.
So would the Age of Asphalt and Concrete.

It also became clear why the nations were expected to commence major space enterprises. Henceforth, the raw materials for industrial civilization were to be taken from Earth’s lifeless sisters, not the mother world. All mines currently being gouged through Terra’s crust were to be phased out within a generation and no new ones started. Henceforth, Earth must be preserved for the real treasures—its species—and man would have to look elsewhere for mere baubles like gold or platinum or iron.