Most people prefer to receive money today rather than ten years from now because U.S. prices have been falling recently and a dollar received today will buy more than one received in the future. People are unsure about their future employment prospects and wish to provide themselves with a source of future income. Future investment returns are expected to be less variable than current ones. Most people are afraid they will spend future cash payments foolishly. Receiving cash today enables one to take advantage of current investment opportunities