Life as we know it is fundamentally unsatisfying. I think most folks feel this to be true. They know that a life of aimless consumption isn't much of a life. And work offers us very little satisfaction. Plus our work and consumption is destroying the environment. And this is in the rich countries. Add starvation, etc. to the mix, and you have a lot of people in the world pretty unhappy with things as they are. Modern communications make all of this known to people far and wide, and we see the fundamental unfairness of it all.