Plentiful money supply=roaring twenties with loads of borrowing.
Restricted money supply=recession/depression with loads of repossessions.
Between 1929 and 1933 the money supply was cut by 23%.
thats true, but they couldn't increase the money supply because the dollar was pegged to gold. Not so now - so it will probably be many years of crippling inflation. In the bankers and the governments eyes thats a better option than deflation (which will happen for a short time anyway before they massively increase the money supply to try and avert it).