Creating a fire isn't as simple as it appears in films. You can't just simply pop out into the forest collect a few twigs and have a grand roaring fire. If we did all try that we'd find that in sunny England we'd always have campfires as sad as this.
The reason we can't just burn any old tree sat in the forest is because the wood is too wet. As trees are alive they are filled with moisture and water. Freshly cut wood had to be left to dry. Unlike your washing, it takes a lot longer than one sunny day to dry out wood, it can actually take anywhere between one and three years. Here at Moss Valley, they specialise in providing Kiln dried wood which is quality wood made even better from the drying process.