A little more good, a little more light instead of darkness, can be achieved through strong morals, not reaching for complete objectivity.

Say, someone murders an innocent person -- someone with strong morals for justice will slaughter the infidel who dared commit such a crime. Whilst society that adheres to complete and utter objectivity and consideration will treat the criminal with "consideration", possibly lock this criminal up for a few years, then set them free.

If we tortured people for murder, had inquisitions against those that dared insult the fairer half, curse with a foul mouth all around and all such, the world would have more than just a little more light, it'd be much better due to lack of a large amount of darkness in it.