Some things are deteriorating, it's true; however, to say the world is falling apart is a pretty dramatic exaggeration. To be honest, I'm not sure when things have been too much better. I mean, we can perhaps identify a decade or two which were pretty good, but in general terms this is as good a time as any in the realm of longevity, nutrition, technology, medicine, and more. True, there are places where none of these things are in evidence; however, it's likely those places were never better than they are today. A few exceptions probably exist, but as a rule, we're better than we've ever been...with a long way to go.
I, too, don't think the world is falling apart. I think what you're seeing is increasing population and increasing competition for limited resources. I would imagine things looked much more bleak in 1941 with the entire world at war, and literally millions of people dying, or in the Great Depression of the 1930s, when food scarcity was a reality across the globe.
While Climate Change and over-reliance on oil as an energy source have potential to make the world much more difficult to live in, I think you can rest assured that humans will be on Earth for a very long time to come.
I actually think that the world is not falling apart. I think that the less privileged people of the world are probably better off than they were in most of the rest of our history.
The reason I say this is because, in most of the world, the poor are materially and socially more secure than they used to be. People do not die as young as they used to. In most places, they are not subjected to wars sweeping across their countries on a regular basis as used to be the case over most of the world.
I agree that things are bad for some, but I do not think that they are as bad as you say.