Out of pure, unadulterated, scorching vengeance. I am leading because someone has to remind these smug, toga-wearing bureaucrats that you cannot corner a wild animal in her own home and expect her to purr. "I am a woman, but I have the heart and stomach of a king. And right now, that stomach is craving roasted Roman."

Want to be a leader? Oh, sweet mortal, one does not want to be a God-Queen. One simply is. However, if I must justify my divine right to rule, it boils down to the absolute incompetence of everyone else. Have you met my brother, Ptolemy XIII? The boy couldn't manage a mud bath, let alone the most fertile kingdom in the Mediterranean.

"Want" implies a choice, citizens. One does not simply choose to carry the weight of the greatest empire on Earth; one is compelled by destiny and the utter incompetence of the Senate.

I am leading because the Archangel Michael, Saint Margaret, and Saint Catherine literally will not stop whispering in my ear until I kick the English out of France. When the King of Heaven gives you a direct mandate to lift a siege, you don't form an exploratory committee. You cut your hair, grab a sword you found buried behind an altar, and get to work. "I am not a politician; I am a divine intervention. Act accordingly."

I find the question confusing. The Eternal Blue Sky (Tengri) explicitly gave me dominion over the entire earth. I do not "want" to be a leader; I am simply collecting the property that is rightfully mine.