The Value of Discontent

I wonder at the value of internal peace and tranquility. While I understand that many seek after such, what value is this in a  world that will always require engagement? Where children are hungry and homeless. Where wars rage. Might not a feeling of discontent be a sign of an engaged life, where one recognizes that there is work to be done, work which can break hearts? Perhaps tranquility should not be the highest goal.