Malcolm Gladwell wrote an essay for the New Yorker in 2005 the describes the theory behind our current system of health care - moral hazard. This means that insurance can be used to control the behavior of people using the insurance.
Listening to the testimony before Congress yesterday, it is obvious that we have moved into a punitive system and are about ready to hand the insurance companies even more power. It's a great essay and helps explain why we are not being heard when we have expectation for a health care system that actually delivers health care to those that need it.
"Policy is driven by more than politics, however. It is equally driven by ideas, and in the past few decades a particular idea has taken hold among prominent American economists which has also been a powerful impediment to the expansion of health insurance. The idea is known as "moral hazard." Health economists in other Western nations do not share this obsession. Nor do most Americans. But moral hazard has profoundly shaped the way think tanks formulate policy and the way experts argue and the way health insurers structure their plans and the way legislation and regulations have been written. The health-care mess isn't merely the unintentional result of political dysfunction, in other words. It is also the deliberate consequence of the way in which American policymakers have come to think about insurance.
"Moral hazard" is the term economists use to describe the fact that insurance can change the behavior of the person being insured. If your office gives you and your co-workers all the free Pepsi you want—if your employer, in effect, offers universal Pepsi insurance—you'll drink more Pepsi than you would have otherwise. If you have a no-deductible fire-insurance policy, you may be a little less diligent in clearing the brush away from your house. The savings-and-loan crisis of the nineteen-eighties was created, in large part, by the fact that the federal government insured savings deposits of up to a hundred thousand dollars, and so the newly deregulated S. & L.s made far riskier investments than they would have otherwise. Insurance can have the paradoxical effect of producing risky and wasteful behavior. Economists spend a great deal of time thinking about such moral hazard for good reason. Insurance is an attempt to make human life safer and more secure. But, if those efforts can backfire and produce riskier behavior, providing insurance becomes a much more complicated and problematic endeavor."
from New Yorker archives
http://www.malcolmgladwell.com/2005/2005_08_29_a_hazard.html