Both sides had belief in the cause they were fighting for - and both sides had belief that they would win. Sharing and summarizing helps us realize how when times got tough it was the leadership and the group unity that helped them persevere.
Life changes. People change. Ideals change as society grows and matures. What was good for mankind years ago may not continue to be good for people of today. To ensure we protect our freedoms we need to evaluate what ideals we still believe in.