When things change for the better, people automatically change their standards and then complain as much as before (or even more than ever)
These new sensitivities can also be interpreted in a positive way: They are the side effects of social progress. Our living conditions have improved so much in so many areas that today even the tiniest imperfections have become perceptible. The really serious social and political injustices have largely been abolished, therefore even small violations of moral norms have the power to cause uproar and moral indignation
When a problem is (all but ) solved, people automatically broaden its definition - without being aware of it. In one study, participants had to identify threatening faces and distinguish them from neutral and friendly faces. But when angry faces appeared less frequently, many participants subconsciously shifted their standards and suddenly found neutral facial expressions to be terrifying.
All this suggests that many social problems cannot be solved and that public disputes will never end. Not because difficulties never disappear, but because the coordinates of how problems are viewed and evaluated shift. German philosopher Odo Marquard once described this phenomenon as the "law of the increasing obtrusiveness of negative residues".