Jeremy, great post. And you and I are QUITE PROUD to be "diggers" , "looters", "pothunters" , etc... I will wear that badge with honor. And stealing from future generations? On the contrary! They are MORE THAN WELCOME to come look at the artifact on my mantle place, or buy it on ebay! haha
Ok, all joking aside, a look at a few of your points: Yes, we would all agree with those archies in one point: That there *are* sites (sensitive historic monuments), that .... sure .... shouldn't be dug up by hobbyists. Examples: Shiloh, Bodie, Ghettysburg, etc... Ok, I'll grant them that. We all appreciate a cool historic part, with intact displays, etc... But where we disagree with them is that ALL public land (and even private land, if you were to ask some of the more purist types) falls under the same category. Because as you point out, NEVER IN A MILLION YEARS can even the most well-funded university archaeologist dept's dig every square foot of even a single state or federal park. They dig little 6 ft. square pits which take them painstaking weeks to do (with tweezers, brushes, etc....). Thus obviously they could never progress to get a single square mile, of a single park. So what the h*ck are they worried about ?
To answer that, they would probably answer like this:
"Because you never know where, 1000 yrs. from now, a future archie *might* dig a pit. You can't say for 100% certain that some archie won't gather crucial information, by the v-nickel or button you just dug, in this spot in the middle of the forest, or desert, etc.... For example: look at Egypt, how/where, to-this-day, they are finding fun and exciting bits of information, by digging even on seemingly mundane sites, far from pyramids. You know, like a ho-hum village along the Nile where they can deduce how the pyramid quarry workers lived. Therefore while it may seem mundane to you NOW, yet 1000 yrs. from now, a mundane ball park or beach *might* become a crucial contextual piece of information."
See ? And let's be honest: Even if you COULD get them to agree that a wheatie or barber dime gives no relevant info, nor would be anywhere near anything "sensitive", yet let's be honest: It would be the old "camel's nose in the tent" logic. If you tell an md'r that "it's ok at all these federal parks" (because they are not historically themed), then it will just begin a "splitting hairs" baby-sitting exercise on the government's behalf. So seriously now, what do you THINK the "easier answer" is? To merely say "no to all". Presto, problem solved.