Simple question of animals per square mile versus people per square mile.

A little bit of poo out in the wild is just excellent fertilizer that doesn't botter anyone. But you don't want a lot of poo and toilet paper in areas that see a lot of visits.

It seems a lot of people have trouble putting their "if I do this it can't really botter anyone" - habbits into perspective. And that is not only related to where and how to defecate properly...