The reason for this film's broad appeal is, in a word, manhood. That which scorns weakness and esteems strength. That which refuses to compromise. That which prizes honor over pleasure, riches, or even life. That which defies tyrants, both foreign AND domestic. And that which continues fighting despite no hope of victory. King Leonidas and his Spartans appeal to us because they carry the banner for these virtues, which have gone virtually extinct in a world dominated by the spiritual descendants of Xerxes and Ephialtes. We cheer the Spartans because deep down we recognize the grotesquery of modern existence, an existence where the virtues of manhood endure slander every single day. Try to think of any "leader" in modern life, whether it be in politics, business or otherwise, who would reject Xerxes' offer of earthly preeminence as did Leonidas. The only people today who have anything approaching such grit are outsiders and dissenters, not the ones occupying the heights of responsibility.