This Sacramento Bee article discusses an economic study by the Proposition 71 organization (the California Stem Cell Research and Cures Initiative). Such studies - extrapolations and educated guesswork, really - should always be taken with a large pinch of salt, but some of the underlying data should give you pause for thought. In particular, the economic cost of disease: medical services over a lifetime can top a million dollars, nearly all of that due to common, chronic age-related conditions in later life. Diabetes and cardiovascular disease are expensive propositions, for example. Good insurance is key, but far better to support medical research into real preventation and reliable cures!