My inability to iron my own shirts, my wife's disdain for cleaning toilets, my hatred of caring for a garden in the desert, our combined discomfort of driving in what is a third-world traffic system, etc. is cumulatively keeping several small villages around the world going.

They day the well-to-do start cleaning up their own rubbish is they day these people return to their home countries to live in abject poverty, living in unhealthy squalor, turning to crime, and relying on charity and welfare. When the system crumbles, civil war breaks out and with it mass murder. Then the West is called in to restore peace and rebuild the infrastructure. Better just to pay them a labourer's wage now.

So think of littering as a charitable donation to poor people around the world and an investment in future world peace.