Just want to point out the flip side of wood fires.
Despite our "natural" relationship to wood fires for most of human history, the fact is there is no amount of smoke from a wood fire that is safe to inhale. Most of the particles in smoke are below the nano-meter scale that gets embedded in the lungs for decades and causes all kinds of damage - it's associated with asthma, allergies, heart problems, other breathing difficulties, and lung cancer. Some studies suggest wood smoke is up to 10 times more damaging than tobacco smoke. It's also extremely polluting. In some cities where wood-burning is common, it is the biggest contributor to air pollution and to breathing problems locally - more so than vehicle exhaust.
I know this all probably sounds rather ridiculous, as the good ol' campfire seems such a hearty and natural pastime, but the science is pretty solidly against it ever being a good idea unless absolutely necessary. It's important to try to get past the cognitive dissonance when thinking about these sorts of things. Then again, I suspect a lot of folks likely just don't care much.