What comes to mind when I think about the Paradise scenario. Wayward Pines, Ishmael the Gorilla's critique of civilization, and the Last Man on Earth. Too much Hulu, I admit it.
With Ishmael the Gorilla, the sin really got bad when Cain (Agricultural Man) slew Seth (Pastoral Man). To truly have faith in God, mankind must forsake the inheritance of Cain and sedentary civilization. Which is why the Abbies in Wayward Pines are better than people. The Last Man on Earth drifts betweem boring and hilarious which is what life would be like if 99% of humanity were dead.