It shows they have no idea why humans should suffer! Even a cursory look would reveal that there is violation of law(s) behind suffering, and there is observance of law(s) behind well-being. Everything goes by law. Look at the wonderful mechanism called seeds. Each of all the species on earth (about 8.7 million) reproduces only its own kind, which shows how perfectly laws are working. Both well-being (when laws are observed) and ill-effects (when laws are violated) are results of some laws at work, like two sides of a coin. For example, in skillful cooking, delicious dishes are produced which means some laws are perfectly observed. In careless cooking, what you cook is burned, or food item being turned black into carbon, which again means some laws are at work. Living things contain the element carbon. That is because many organic compounds are present in living things such as carbohydrates, lipids, proteins, nucleic acids. Organic compounds contain both the elements Hydrogen and Carbon besides any other elements that may be present in a compound. Therefore, anything that was once alive that you cook and subsequently burn, will turn black and the charred material will definitely contain the element carbon. The unexpected ill-effects from violating some laws are felt as suffering and as bad. Interestingly, God cannot get involved in the affairs of mankind because everyone’s viewpoint varies. Humanity’s situation can be symbolized by a potter and an umbrella merchant. Potter whose business depends on sun would pray no rain should come whereas an umbrella merchant would pray for rain to come always because rain is a source of suffering for the potter and the same is a source of business for the umbrella merchant.
However, suffering helps the humble who would take lessons from it and would be careful in the future to avoid things that led to suffering. For example, a person not careful about being hygienic is finally to suffer from related diseases which would give him a thirst to be hygienic. That means suffering glorifies the well-being.