Imagine you're an alien visiting Earth on 2050 and it's the worst-case scenario as predicted. You see all the suffering, people starving, not a lot going on and then you look at all the arable land, the mineral resources, the factories, etc and nothing is happening. People refuse to help each other at a large scale. It's like the hungry ghosts story in planetary scale. You'd be very puzzled, wouldn't you?

Food for thought...