Because they are needed to most insects so they do not get out of controll.
From the bottom up, is important to wildlife in some way. Wetlands provide great volumes of food that attract many animal species. Predatory fish, reptiles, amphibians, birds, and mammals.
Some insects use bottom debris to form a protective covering. Species and is a major source of food to mammals.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.