That's the beauty of the situation. We don't know who did it, and we don't need to; the problem will take care of itself.
And I don't buy the argument that anyone ever has to steal. My income in 2010 was a nice round $0, and I didn't steal anything.
"When income is taxed, it becomes a discouragement to continue to not only work hard, but excel and succeed if more and more is taken from you." -- False. For most people, money is an incentive only up to the point where their basic needs are met. After that, it actually becomes a disincentive.
"Taxation should be based on consumption. Everyone, at the exact same rate." -- A terrible idea when stated this way. And though you go on to acknowledge that necessities should not be taxed at the same rate as luxuries, the "Fair Tax" proposal does not actually address this. It is "progressive" only at one break point, as if there were only two social strata, which is of course not the case.