A carbon arrow is a hollow tube. To attach a point, you need to add a threaded insert. If you hit something hard with it, it is liable to force the point and insert back into the shaft and split out the mouth of the tube, ruining the arrow. Or, you have to reinforce the shaft with a piece of aluminum to try to stop that. A wood shaft is a solid piece. To add a point to it, you cut a taper on the end of the shaft and the point is adhered on to that. When you hit a hard object, the force on the point is supported by solid wood. Often, the wood arrow will shrug off the hit. Depends on the wood though. I have seen Birch arrows bounce off steel plate and could be shot again. I once shot a Douglas Fir shaft into a brick wall and it lived to shoot again. Wood is easy to work with. Carbon arrows need to be cut a certain way and the dust and fibers are dangerous. Wood arrows do need to be cared for, but it is not difficult. Just my $0.02