You both have been fighting for a decade nonstop. The entire state was in shambles due to your fight with your nemesis. At this point you was mindless and you both weren't in control anymore. What made this fight so long was that you both were gifted with godlike powers and both had the same objective in which it was to kill each other. After a while, it felt like your entire life would be dedicated to fighting the one person you despised so much.