Of course, he is absolutely right. Think of any Superhero and the Arch Enemy looms like a shadow, the doppelganger - a dark presence who is always spurring the hero on to greater heights of Super-ness. How many celebrities and Superstars are driven on by their unthinking tormentors from their high school days?
I think Chuck's right. My own personal Arch Enemies (Sniveling Weasel and Big Chief Totem Pole), have spurred me on to great new successes. So I suppose a "thank you" is in order. But of course, the Arch Enemy is the last person in the world you would ever thank! And as Dark Man likes to say - "So much to do, and so little time!"