Although doctors are battling the same old diseases, they are also creating new knowledge, new ways to attack those same diseases with new treatments. Just look at the recent pandemic.
I think many people see nothing changing in their monotonous lives, hence the phrase "nothing changes, everything is the same." But perhaps it's because they don't notice the details of life. If you wake up today and look at your room, you'll say nothing has changed. Tomorrow will be the same, but if there were just one insect or a bit of dust, it would make all the difference. It's the same with every little detail of our lives that we ignore because we're not interested, we don't want to see it, or because we spend so much time looking at things, thinking big, that we overlook the small events that accompany our lives day by day.
New treatments, but not cures, nor ways to stop the disease from happening at all. The pandemic itself was most likely manmade.
Things are always changing, all of them small. Even the big things are just part of a series of small things. But the problem is, the majority of the small things we are doing isn't making us better, it is making us worse. That gives people like doctors new problems to treat, but no one is upstreaming to stop the disease at the source.
The topic is complicated because it encompasses macro issues. Many diseases not only have treatments but have been eradicated, like smallpox. The technology that exists now has prevented people from dying earlier because, without tests to detect tumors or harmful agents, people were dying. It's known that medicine is a business; it's more profitable to have sick people buying medicine every year than to cure a disease. Diseases aren't addressed in terms of eradication because they don't affect everyone; they aren't contagious or are extremely difficult to transmit. Since they don't affect everyone, I think they aren't a lethal danger...
Do people harm themselves because they seek it out? Or because the world gives them the tools to do so? A person isn't born obese, but there are hundreds of stores outside selling sweets, candies, and millions of other sugary products. These things don't directly harm you, but if a person consumes them without limit, they will have health problems and will need medical treatment they didn't previously require. Although it sounds bad, there's another side to it: all these companies provide jobs for thousands of people, creating direct and indirect employment opportunities. When someone gets sick, a nurse, a doctor, or a clinic is ready to receive them, and their families will have food to feed, thus continuing the cycle.