Traditionally, poor people who couldn't afford meat have been much worse off health-wise. And the biggest health decline in human history occurred when we switched from hunter-gathering lifestyles to farming (see Jared Diamond). Further, the Keyes hypothesis about the dangers of fats -- weren't you the one suggesting refined beans? -- are not well supported (see Gary Taubes).
Poor people who couldn't afford meat have been much worse off health-wise because they weren't eating well in general, because they don't have access to medicine, because they don't have access to supplies for hygene.
Put another way: poor people are worse off for a great number of reasons, but I don't think that proves that rice and beans will kill you.
Jarad Diamond (among others) showed that switching to civilized society shortened lifespans. You're not advocating becoming a hunter-gatherer and neither am I, so it's not really germane. Civilized society has a lot of factors that contribute to earlier death, such as population density helping the spread of disease. To draw from his work that carbohydrates will send you to the hospital is to draw a totally unsupported conclusion.
"Weren't you the one suggesting refined beans?" I was the one who replied with a recipe when you suggested that the diet was lacking fat and protein.
You don't address the issues of cost and you still haven't shown that the level of carbohydrates present in beans are a problem. My point is that most foods present trade-offs and you should probably eat a reasonably balanced and varied diet.
