Have you ever set fire to wood? It takes some work.
For the big pieces, yes. That is why you gather up some twigs and/or bark. A few matches plus a little paper make it pretty easier to get a fire going if you can keep the wind from blowing it out.
I haven't lit a fire in quite some time. We used to burn trash when I was a kid. That was a chore well fit for young 8 to 10 year old boys. We would pull out spray cans and stuff and place them in the fire to watch when they exploded. Put burning 1 gallon plastic milk jugs on a stick and attack ant beds with smoking plastic droplets. In the right circumstances, tennis balls and racket balls can explode. I had cousins who never got to play with matches. There are some things young kids ought to have experience with.
