"Look, this was the iniquity of your sister Sodom: She and her daughters had pride, fullness of food, and abundance of idleness; neither did she strengthen the hand of the poor and needy."
There is a deeper message here. Note that "fullness of food and abundance of idleness"?
If you look at history, you notice Liberalism waxes with prosperity and wanes with austerity.
People rich in material goods develop the feeling that old restraints on their behavior are no longer necessary, and so they let their utopian ideas have rein.
As is true of the bones in our bodies, I believe our spirits can only remain healthy if they are occasionally put under stress.