I have to pause for a moment because I don't know why you make your conclusions like that or perhaps you just assumed things based on the things you see around you right. I guess you need to leave your comfort zone and see how life has been in other part of the world. Some people has moved from average life to worse due to war, due to climate change, due to economic decisions and also terrorism, all these has stop them from having a good life.
I think the world is constantly moving and there is always change, but there will be differences in each country and each region, not everything is better and not everything is worse. There are countries that are getting richer and there are countries that are getting poorer so there will be different thoughts about how the world is changing.
Healthcare facilities are another aspect that has worsen due to generation and widespread of new diseases and sickness. Back then, common sickness were yellow fevers, malaria, small pox and chicken pox and with vaccination, all of them disappeared but it seems we now have advanced sickness around us that we are dealing with everyday and you think that things are fair, I'm not sure if that conclusion is okay to say.
I think this is not entirely true, the diseases that we call common diseases today such as cholera, chickenpox, smallpox, malaria...these diseases were also called pandemics and took the lives of millions of people at that time. But over time, humans developed vaccines and treatments so they became common diseases. Similarly, incurable diseases are a big problem for humanity today, but they will also become common sickness as we find cures and vaccines in the future.
The downside of world evolution is that we find ways to solve old problems but inadvertently create new problems and it becomes a vicious cycle.