Nobody has mentioned what would happen to all the animal waste .
That was kind of alluded to in the article I posted;
"Insects also return nutrients to the earth. If they weren’t around, the amount of decay and rot all over the place would be terrible"
The Asia countries that insects are a large part of their diet.
And this was covered in it too;
"You say that 2,086 species of insect are eaten by 3,071 different ethnic groups in about 130 countries. Give us some highlights from that global menu—and your own experience in Japan.
[Laughs] If you go to Mexico, they are selling chapulines—grasshoppers—in brown paper bags filled with spices. In Borneo, they eat rice bugs blended with chilies and salts, cooked in hollow bamboo stems. Caterpillars are very popular in Africa and are a great source of zinc, calcium, iron, and potassium. On Sardinia and Corsica, they eat “crying cheese”— Casu Marzu—that literally has maggots inside it.
In Japan, we went to three restaurants in Tokyo and Shinjuku. At the first, they had these bamboo caterpillars that you could tell had obviously been dead for a while. They got caught in the back of my throat. [Laughs] I needed a swig of beer to get them down.
The next place we went to had a smorgasbord of various insect species. One was this locust that ate rice leaves. It was cooked with soy, with a nice glaze, and because it ate rice leaves, when you ate the insect, you got this crunch, followed by this bright herbal taste that was unique. I’ve never experienced an ingredient like that.
Wasp larvae tasted like the white raisins you get in couscous. They were sweet, had a little pop as you ate them. When chefs regard insects as an ingredient filled with potential, you end up getting fantastic things."