the relationship between food and money

why is it that being hungry and wanting to spend go hand in hand? When i was hungry earlier i made a sandwich but it was all i could do not to rush to the store to buy some stuff. I haven't done the monthly grocery shopping for february yet and january's stock is getting low, there's not a whole lot to throw together besides what is already scheduled as dinners and lunches for the next few days. I calendar out our meals for the month but this month we had more trouble sticking to the calendar than usual, i'll try a new method for february and we'll see how it works. I'm hungry right now, it's not quite dinner time, it's the time of the day the kids start asking for a snack, and i have a few snacks that satiate them just fine, but somehow fruit snacks or a cheese stick just don't cut that afternoon hunger for me...i looked at some recipes in a few cookbooks but didn't feel like any of them sounded good, the ones that did sound good of course i was short some ingedients for so hence the wanting to go to the store for just one or two ingredients would inevitably turn into a lot more. Maybe i'll just make another sandwich.