Crackly fires

Something about dry heat...crackly wood...We must be predisposed to liking fires or something. Of course most all animals love warmth. Warmth speeds up chemical reactions, which fire the metabolism, which enables life to get on with its little game that much quicker. But beyond that humans seem too have an inborn attraction to open flames. Sitting at home with the heater on bathed in an even warmth is just not the same as huddling around a wood stove or a campfire, one side toasty and the other cold, mesmerized by dancing flames and exploding pockets of sap. It feels primal, like runner's high or deep hunger.