This is a very pessimistic perspective.

Also poverty and hunger are lower than ever before (considering previous eras, and it's not yet good). More and more people are getting education. Fairness towards women and minorities used to get better.

We're having scientific advancements every day and can easily communicate with people around the globe, and it's even cheap and available to many people. Some people think we'll soon invent general artificial intelligence and maybe robots will do the unattractive labor for us. Some people (i'm not sure if i trust people like Elon Musk(?)) even say science is soon going to solve things like overpopulation and climate change. They want star trek to become true. Also medicine is getting better each day, we can cure more and more things and people need to suffer less and less. Maybe there is a cure for cancer coming up in the next decade.

Is it really on the decline? Are we having less or more wars than we used to have? Can we afford more or less stuff than our parents or grandparents did? I'm not sure... Things are a bit complicated and sometimes something gets worse while other things get better. Sometimes it's for short or longer periods. I get what you mean and it's a problem. And too many people around the world are suffering things we could have fixed by now. But this is only half of the story.