“One of the most important would be that hurting other people and causing suffering violates my conscience”
Mine too.
But what makes you or me the arbiter?
What if hurting others and causing suffering does not violate another’s conscious?
We are the arbiters because morality is a system for homo sapiens to live with each other.
Societies based on rape, murder, torture, and slavery do not last and eventually fail, as do those who base their lives on such.