Urban 'flint knapping' arrow heads.

[Tartar Horde]

Each person follows his or her own course and that's cool by me. Once you are able to produce blades from cores you can produce blades long enough to make knives, and as Talon says they are sharper than most metals are able to achieve. I believe surgeons still use Obsidian blades as they are the sharpest for delicate work. I can perfectly understand the attitude of it being a "dead art" so to speak and not very relevant in todays world of ample supplies that will be laying around, but I would suggest having the skill to make a tool with nothing but your bare hands, that has a proven track record has got to be a useful skill. For those folks who can't get hold of good flint simply use Bone, you can make a wide range of points with this material and it is not too hard to work. Highlander if you are willing to test a few out for me on a Carcass when you get one, I will send you a few.