Fire is a critical part of survival. Being able to start a fire, even in the worst of conditions, is an emerging skill which was all but lost for many years. In modern civilization, the need to start a fire is overshadowed by the other means we have for heating and cooking. But when you’re caught in a survival situation, none of those means work, leaving you with the need to build a fire the old-fashioned way.
Fire does several important things for us. First of all, we use it to heat our shelter, regardless of how primitive that shelter may be. While modern homes have central heating systems, you can’t expect that convenience when trying to survive in the wild. We also use it to cook our food, a necessity to prevent food poisoning. But fire does more than that as we use it to provide us with comfort as well as protection from wild animals.