In non-oil-producing countries like Burkina Faso, biofuel could potentially provide an alternative to the more expensive oil imports, given the current hike in the price of crude oil. With the recent surge in crude oil prices and with the $100 per barrel price set to stay, an alternative energy source would help remedy the incurred costs of rising crude oil prices.
Furthermore, biofuel and food are not mutually exclusive. For example, biofuel byproducts can still be used as livestock feed or as fertilizer. Biofuel also need not be produced strictly from edible grains, answering concerns of demands for food should a food source be used for energy harvesting instead.
Biofuels don't have to necessarily fuel everything in order to be useful as they can be used strategically. For example, in poor countries, diverting small proportions of crops for biofuel production specifically to fuel tractors and other agricultural equipment could be a way to simultaneously increase the scale of production and have agricultural production fuel itself.