Australia hardly imports any food at all, because it's large and climatically diverse enough to support just about every crop in the world. And yet people are

Australia hardly imports any food at all, because it's large and climatically diverse enough to support just about every crop in the world. And yet people are still fat. Y'know why? Because they eat too much. Do they eat too much because they're too poor to afford better food? Nope, they eat too much because food is tasty and they have imperfect self-control.