I understand that you believe it. We're not actually discussing your beliefs but what you are postulating as fact. If we can't assume that suffering is necessarily bad, then we can't assume it's necessarily good either. Since we cannot know either way, why would you make the assumption that it might be good?
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'