What are all you doomers going to do when the oil runs out and the world doesn't come to an end?

The world will still be here, though under the scenario you imply, civilization assuredly wouldn't be.

We have a medium-sized garden (20'x80' in raised beds with companion plantings and cold frames) from which we obtain about 10% of our nourishment, though we also raise and sell lambs (about 2 dozen/year), hence our total output would be equivalent to the 25-50%. Sheep 'fertilizer' makes the garden flourish to an extraordinary degree. Over the last two years we've completely redone the landscaping, planting 45 disease-resistant fruit and nut trees following permaculture (edible landscaping) principles. Collected rainwater provides a large portion of the needed water through a drip irrigation system. When these trees begin producing, our own level of self sufficiency will reach an equivalence of around 75% (as we will continue to 'export' much of our produce).