I was listening to an NPR report on big-ag. A farmer explained his opposition to big-ag that once only a few companies own all the farms, then they can set prices as high as they want.
Capitalism, the most popular religion in the US, is based on greed, at least as practiced in the US. (Proponents seem to have forgotten the Scot Adam Smith's corrective statements about the community.) Unfortunately, greed, left unchecked can lead to disaster as we have just witnessed.
Calvinists have a dark view of humanity. We are all depraved creatures. Calvinists understand greed. They understand that humans, left to our own devices will run amok. We need more Calvinists reminding us that we are not perfect and that we are not God and that we do have a propensity to choose evil, and to convince ourselves that choosing evil is actually a good thing.
Calvinists also use their brains.
For a while, I had laid aside my Calvinism. I am putting back on my mantle of Calvinism. And yes, Calvinists do have a bent toward self-righteousness.