If someone were to ask you to rattle off some of the not-so-pleasant thoughts that occupy your mind day to day, nagging back pain, getting the kids to soccer practice on time, your old clunker about to go kaput, or your baseball team being fifteen games back at the All-Star break might be some of the things you would mention. But whether or not there'll be enough food to buy tomorrow -- well, that's hardly something over which you or anyone you know probably loses any sleep.