Compare the emotional vocabulary available to a leader (confidence, satisfaction, indignation) with the emotions not permitted (regret, embarrassment, dread, angst, mortification, anger, surprise, wonder, doubt), and it becomes apparent why perfectly normal people, upon entering public life, transform into cartoons - because they are not free to express what a normal person would feel in their situation.
At some point we must draw a line across the ground of our home and our being, drive a spear into the land and say to the bulldozers, earthmovers, government and corporations, "thus far and no further." If we do not, we shall later feel, instead of pride, the regret of Thoreau, that good but overly-bookish man, who wrote, near the end of his life, "If I repent of anything it is likely to be my good behaviour.