The question is really: why wouldn't the Fed cut rates? In an ideal world, interest rates are 0, so the govt can borrow money and not have to pay any interest. So the natural tendency is to lower rates except for the following reasons:
a. increases risk of inflation. However, last couple of PPI reports show a deflationary trend despite all of the interest rate cuts that have already occurred. There is no short-term risk of inflation at this point.
b. lowered interest rate weakens dollar. While this is not so good for bonds, this is great for stocks. Might as well put your hard-earned dollars into companies that will get paid in Euros and yen for their products. Weakening dollars are great for the economy as long as there is a stable floor. The recent weakening, and then bounce, show that the dollar will not freefall. Why do you think Japan is so desperate to weaken the yen. They will go bankrupt unless the yen is weaker.
c. govt has a harder time borrowing money with lower interest rates. There's no answer to this except that the deficit is nowhere near where it was in the 80s and if lowered interest rates strengthen the economy then long-term it will be easier to raise money.
Often, financial stocks lead a recovery. A lower interest rate will encourage more housing refinancing, more construction ("housing is not a bubble" - Mr. G), more loans, mortgages, etc. Financials will skyrocket tomorrow (particularly after the pullback today on worries the Fed will not raise.)
My prediction: 25 bps cut with a neutral bias.