No one likes doing chores. In happiness surveys, housework is ranked down there with commuting as activities that people enjoy the least. Maybe that's why figuring out who does which chores usually prompts, at best, tense discussion in a household and, at worst, outright fighting.
One of the big take-aways from a lot of economic theory is that people should engage in consumption smoothing.
Education campaigns ... may not be enough, at least not alone. If people have no incentive to avoid AIDS on their own, even if they know everything about the disease, they still may not change their behavior.
When I meet people on airplanes and they find out I'm an economist, they usually ask about stock tips.
As people do a task, they improve at it.