Long term bullish sentiment provides hope. Knowing that by 2050, there will be twice as many mouths to feed, makes a guy think there will be long term demand for food. It's just too bad long term outlooks don't help pay short term bills...
http://www.contextnet.com/AgrInsights%202010%20Context%20Paine+Partners%20Ag%20Outlook.pdf
Nonetheless, this is worth a read.