Those are the questions many investors are asking themselves after the worst December for US stock markets in decades. Despite record setting levels going into the fourth quarter, they saw markets give all that back and then some. For the quarter, the S&P ended up off nearly 14% from its high, the Dow was down nearly 12% and the Nasdaq fell over 17%. Foreign stocks shared a similar fate, and oil prices are off nearly 40%. All of this was against a backdrop of pretty solid economic data across the board.