Same thing we've been talking about. Why do you feel that it is wrong to hurt another person? How do you know your feeling is correct, right, proper? Do you think this moral standard of yours should apply to others? If so why? If someone has a different feeling than yours, a different standard, are they wrong? If so why? Why should your conscience bind another person?
Or simply answer me this, is any moral choice objectively good or bad? That is, good or bad no matter what the person's subjective feelings would be?