Ezra Klein
posts an interesting graph showing that cost increases, not demographics, will the biggest factor in pushing up Medicare spending to unsustainable levels.
This is why we need a government funded system, modeled along France's, that can control these costs. If we don't get a comprehensive government program to provide healthcare for the elderly, their medical care could well bankrupt the nation.
This article available online at:
http://www.theatlantic.com/business/archive/2007/10/what-else-is-there-to-say/2174/