To me the bottom line is that drill bits - at least good enough quality drill bits, are cheap. The115 piece set I posted a photo of above, bought on sale, is around 35 cents per bit. For that cost, its not worth fussing with trying to sharpen, etc.: I view them as commodity, disposable units: wear them out of lose them and just replace when needed.
I also used them for other applications. Yesterday I needed to add some weight to a seven-inch long box trailer I had scratch build for a 1:50 'Sctreets big-rig. I just picked out three big (roughly 3/8 inch) drill bits in sizes I probably will not need soon, each about 6 inches long and dropped them in the trailer. They worked so well I went ahead and epoxied them into it as permanent weights. Not what they were intended for, but they worked so well . . .
