1) I seriously doubt investors will prefer to hold US dollars for meager deflation gains instead of investing in other financial assets projecting far greater return (stocks, bonds, real estate, etc).
2) Wages are sticky. Yes, 20 years of deflation would send wages down. I don't think a short period of deflation would do too much.
3) See my comment below. I printed an abridged version of it here:
When I'm on a fixed income, I don't care much about the value of my money that's going toward paying down debts. I care about the value of the money I have left over.
Say I earn $1000 a month. $600 goes to loans. $400 is left over to spend on food. With deflation, sure, that $600 is really worth more than otherwise. But it's a sunk cost to me. That $400 is what matters to me, as a consumer, and with deflation, it buys me more food.
I appreciate your points, but I still think deflation fears are overblown.
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EDIT: to comment on your last remark about proving the unfavorable effects of money-printing...I don't need to run tests. I have history. Money printing is the genesis of hyperinflation, a well-documented historical phenomenon.
http://en.wikipedia.org/wiki/Hyperinflation
Printing paper money to monetize debts NEVER ends well. Show me a case in which it does, and I'll award you a paper Nobel Prize.