Out in the wilds, I don't think I would have a problem with making the occasional fire ring or anything like that. How often do you come along and find some burned out fire ring that you can trace back to American Indians or Cowboys from over a hundred years ago? Rare thing in most areas, yet they existed! Nature cleans itself up nicely. Rain, snow, wind, it works wonders. (That is not taken to an extreme by me, like others do, that we can ignore things like this BP debacle because "the earth will heal itself," etc.)
Feces and trash are a different thing.
When I was a kid in the 70s, my Dad found this little creek off the lower Susquehanna River, a couple/three miles below The Conowingo Dam. It was always just trashed. It was about 3.00 a day, no bathrooms, no nothing. No electric - nothing! OK, well, they had rusted out old 55-gallon drums for trash.
Great place.
I was a total, but safe, firebug. I kept in the campfire area, but I would burn damned near anything. I burned a tumbleweed of cut and dried Poison Ivy once. My Dad almost let a chunk loose over that one!
People would bring back that nasty radioactive green corrugated fiberglass and make halfassed lean-tos out of them, etc., then they would be all busted up. Just kids coming back with a hammer, pocketfull of nails, the fiberglass, a couple 2X4s and a bag of dope. Up goes the smokendope shelter.
Every time my Dad wasn't looking, in the fire it would go. Plastic milk jugs, huge tangled balls of discarded monofilament line. There was nothing I would not burn. Hell, he was cooking on a Coleman stove, didn't hurt anything...except for my cancer they will one day blame on cigarettes I used to smoke.
I would burn an entire year's worth of trash and garbage, within reason, in one week. It wasn't going to be disposed of in any other way.
He was in The Marine Corps, so, even as a small boy, if you didn't take care of your #1 & #2 deposits, he would put his foot in your ass. He knew about sanitation. He would sharpen my knives, when I was
six and my mother would always argue with him and he would have to explain to her that it was safer that way because, "He don't have to work at cutting something, the knife does the work."
She never understood that...or maybe she just liked to fight with The Old Man.
Point is, most kids are not being taught correctly and they grow up to be pigs in campgrounds and stuff. Other people discover camping and stuff later in life and they have not done it and they, too, are little forest piglets.
And we that know better have to suffer right along with them.