Nice societies are an effect of the nice people in them.
Fewer nice people, less nice society, less niceness pays.
As America becomes more Diverse™, expect to see an avalanche of articles explaining that niceness doesn’t pay. Because it won’t. Not any longer. America is filling up with not-nice immigrants who will feast on the shrinking pool of nice Americans like vultures picking at a carcass.
This vibrant video showcases the future of America: