"What is wrong with people?" That is a question all of us have to answer, because every day we see or hear news of war, violence, abuse, racism, hatred, and feel the effects of anger, envy, pride, lust, etc. The Bible doesn't run from this topic, it hits it head on.
The pivotal moment in the story of Esther is not the moment(s) of heroism and courage. It's a little less sexy than that, and a lot more ordinary.