If people choose to buy locally grown food, that's great. I just have a problem with them when they try to force that preference on the rest of us through subsidies and regulation. Activist locavores allege that their way of life is more "sustainable," and use this assertion to justify their lobbying efforts. This chart illustrates why they're wrong. Notice that no products are available in January or February. A practice that can't even be sustained for eleven months straight isn't all that sustainable.