The Britannian empire had plunged the world into chaos and war for . . . decades, centuries. A war-mongering despotic empire focused on its own glory, thriving off the subjugation of others. I started the Black Knights, and became Zero, in order to take down my father—to take down all of Britannia and make a peaceful world that Nunnally could live in.
In the process, though . . . I lost . . . a great deal. Several wonderful people that were very dear to me. Hundreds of thousands of lives. And at the point when I decided for this to be my final course of action, I believed that I had lost my very for living—I thought my sister was dead. So, to come to the conclusion that my death could be used in order to finally give back to the world what it deserved—payment for all the blood I had spilt, retribution for the lives that were lost . . . it wasn't difficult, especially since I honestly had nothing else to live for, personally. After coming so far—it was the least I could do.