Marxist Wookie interpretation. It is true that the Force and its Dark Side are not Good and Evil. They are the two dialectical poles around which life evolves.

Marxist Wookie interpretation. It is true that the Force and its Dark Side are not Good and Evil. They are the two dialectical poles around which life evolves. Like Eros and Thanatos or Yin and Yang. That's from a universal perspective. However, from a living being perspective, there is a sweet zone around the point of equilibrium where life grows from the contradiction between the two poles. Outside of these bounds, life dies. Life breeding its own destruction is fundamentally unjustifiable. So the destruction of Alderaan is unjustified.