calamaridog said:
At established campgrounds, I don't see the problem. At primative sites, you should have to keep it off the ground and pack it out.
Gotta remember there's a big difference between a heavily used "primitive" site like you might find in Yosemite or Grand Canyon and one that gets far less use and has a greater recovery time.
Additionally, think of the climatic and environmental aspects of varying landscapes. Wet and rainy Pac NW forests wipe away human impact signs a lot faster than the dessert does.
Blanket statements like "At primative sites, you should have to keep it off the ground and pack it out", worry me since they seem purely authoritative and have no relation to the varying degree to which each area recovers based on a)how intensely it was used b)how frequently it is used c)how it's climate effects recovery.
My big gripe with camp fires would focus more on the number of rings you find (already addressed by the fire permit requirements that you use an existing ring whenever possible) and the intensity of the fires. Thats a hard one to regulate and it seems that along with being out doors comes a need in many to create large, hot fires that focus on the active burning of the fuel instead of small fires that focus on creating a small lasting bed of coals.
When I go camping we often cook on our fire (dutch oven) but keep the fire low. Once cooking is over we feed just enough wood to keep a small bed of coals going which provides tons of heat (since you can actually get in close to the fire). The low coals also keep the fire light down which helps you actually enjoy the surroundings, even in the dark.