How many people are obese now for example? Compared to 200 years ago? Ah but we could never stop obesity!!!! The atheist mind is nothing but an empty glass, no understanding of the possibilities.
And the reason why these things don't work is they (moral relatvists) choose half measures. You want to stop something you stomp on its skull into its brains are leaking out onto the pavement and then you keep stomping until your whole shoe is covered a bloody mess of gray matter and bits of skull. Bring in a monarch wirh a Godly composition and watch the world flourish.