Things happen the way they happen because the world is the way it is.
Let every act be just, and proper, and beneficial.
Good necessitates evil and the two sides of that disk are not always clearly marked.
To be Radchaai is to be civilised.
Without feelings insignificant decisions become excruciating attempts to compare endless arrays of inconsequential things. It's just easier to handle those with emotions.
What, after all, was the point of civilisation if not the well-being of citizens?