I felt cheated by the way grown-ups told me that the future of the world was bleak when I became a teenager in the 1970s. The pollution explosion was unstoppable. Global famine was inevitable. I genuinely want the next generation, my own kids, to know that actually it's possible that the future might be better than the past.
I think if you put people in front of some huge temptation where it's possible to grab as much as they can for themselves, almost everyone will. The beauty of commerce is that it mutes that. The chap behind the counter in the corner shop has no interest in short-changing you, because he wants you to come back.