There is something to be said for primitive fire making. It is a skill that could be useful, but requires a good deal of practice and learning the types of wood suitable for it. With so many other options, few learn it anymore. A bow drill or other fire drill is not something I would carry, but knowing how (and practicing!!!) is something to put together in an extreme situation. The trouble is that in a really extreme situation you may not have any tool or the right materials. It is not a waste of time learning how to do it (and practice!!!).