After being nicked for the third time in a week by the sharp heel of my knives (while cleaning and sharpening, not cutting) I began to wonder what the point is about a sharp heel. I do appreciate the aesthetics of line and tension of a sharp edge from tip to heel but really, in terms of function is there a purpose? I mean even in a yanagiba or a deba where one would use the section of the edge towards the heel a sharp pointed heel is not really necessary is it? Of course I'm not about to blunt or round off the heels of my knives but am I missing something here?