The appetite for power is old and irrepressible in humankind, and in its action almost always destructive. When exercised for the seizure of territory or suppression of liberties, it cannot be said to add to the welfare or happiness or improve the quality of life of those it rules, nor bring content to the ruler. What is it good for? As an inveterate activity of our species, it is largely a waste of time.

— Barbara Tuchman (1912-1989) American historian and author

Thanks to VRW for the tip.