In this part of the country Winter can be severely cold for extended periods. Many people opt for a supplemental heat source using a wood-burning stove. Keeping the stove stoked requires having plenty of wood on hand. For many people, the gathering, cutting, splitting and stacking of wood is a major part of their activity schedule, all for the purpose of keeping your house warm.
Read this post to get a poetic sense of what firewood is.
Just down the road from my place there is a man who spends most of every day, all day, receiving truckloads of logs.
Those logs are then run through the cutter and splitter.
The result is a stack of wood that looks like this;
I use the sawdust from this outfit in my garden for mulch.