Smokeydays, that's a great story, and I hope I can do the same for my 5 year old daughter one day. But those points you found could have been luck, not your Dad! The beautiful Archaic point I found when I was 14 happened when a friend and I were scoping out an abandoned farm looking for old bottles, he said 'wouldn't it be great to find an arrowhead', I looked down and there it was. A couple of years later he and I were digging for bottles in another old farmhouse dump and, incredibly, began finding flints - no chippings or flakes, just about 20 intact points and tools, some of them buried above the 19th century stuff. Eventually we realised they must have been finds made by the farmer in his fields and then thrown out, maybe in a house clearance. About twenty years later my parents bought the place I now spend a lot of my time in, a 100-acre farm, and when I first saw it I thought the only thing needed to make it perfect would be an Indian site - and then on the first spring plowing I found one!
Birdwatcher, I understand how you feel. I always used to feel that way when I was involved in the excavation of burials in Britain - the 'forensic' information gained from, for example, the skeleton of a medieval peasant never seemed to justify violating the burial, especially when you saw the bones later shoved in a cardboard box in a museum store. In the case of the stuff we've been talking about, I'd never take material from a site that was clearly undisturbed - where there was still lots of information in the association of materials, or the possibility of, say pollen or grain survival that really demanded detailed excavation. But most of us find flints in disturbed plowsoil and don't dig for them, so if anything serve archaeology by actually discovering sites which might later be excavated - that is, if you want to risk reporting them and encounter another version of the police state bureaucracy familiar to gun enthusiasts, sometimes resulting in landowners losing most rights on their own land if a site is identified. But that's another story!