I never re-use my broadheads, muzzy 100grain 3 blade fixed. I have toyed with the idea of sharpening up my blades, etc, but since I only shoot 1 or 2 at the most per year, I just buy new ones every now and then. It really isn't that much money, compared to everything else, and I never have to worry about it.

Have you every cut meat with a knife that isn't sharp? There is a huge difference. And those arteries have thick walls.