You mean IRL? It mostly boils down to "we've tried giving hungry people food, it doesn't work, and that's pretty much all the ideas we've got". It's a much messier problem than it seems at first glance, and it isn't all politics or insanity. To pick the most obvious, when you dump planes full of grain on the tarmac in Zimbabwe, what did you just do the finances of the local farmers who now need to compete with free? And what does that do to next year's crop?