The problem is, the Feds love love love to do social engineering via the tax code. Give the masses and incentive to do this, and a disincentive to do that. We all know they are going to tax it, just as we know they are going to regulate it (it there anything they just let be? no) I think the worst thing that can happen is we let them pass tax policies that work against it, say for example moving it around from wallet to wallet as I said in my example above.