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Add a 5th point to your four:
5. Our popular culture is tending towards promoting aristocracy over meritocracy as the norm. Kids are exposed to this idea by Disney at a quite early age (Lion King, and countless others).
As for the inherited wealth point, that is a very good one, and brings out why we desperately need a capital gains tax that is progressive and comparable to the income tax, and why we desperately need to restore a proper estate tax. For "death tax" it is not. Al Franken more properly termed it the "Paris Hilton Tax."