Purim celebrates the eternity of the Jewish people. Despite exile and dispersion, genocidal enemies and those willing to turn a blind eye to such, the Jewish people are here forever. When Esther sent a letter to the Sages, “kitvuni ledorot", (Megillah 7a) write me down for the generations, she was proclaiming that the story of the Megillah is the story of the Jewish people for all time.
Rare is the person who has the opportunity to knowingly shape the course of Jewish history. Most are happy to be relieved of that responsibility. From Moshe to Yonah, Yirmiyahu to Esther, few are willing to carry such awesome responsibility on their shoulders. And even—or, shall we say, especially—when taken on willingly, the burden can be too much to handle. How can one be confident in a decision made today, the impact of which will reverberate for hundreds or even thousands of years?