I have always thought that to be true, perhaps it has only taken this long for our immorality and irreligiosity to catch up with us.
I have recently made it a personal goal to read the Bible from cover to cover, and while the Old Testament is rough going, it is hard to not see over, and over, and over again how God deals with those who have turned their faces from him.
As we largely have.
And that worries me.
I oftentimes think the same thing as you posted from John Adams.