Traditional raising of animals for meat uses a lot of resources such as land area, feedstocks and water (for drinking, for washing, for cleaning).
Insects need much lower-grade food, can be packed in high-density locations, get most of their water requirements from their food, without needing additional water for drinking and produce waste that is very dry, fine-grained and easily handled (by comparison with – say – cow manure) and readily returned to agricultural soil as a natural fertiliser.
On top of these already “plus, plus” features, many insects have been traditionally cooked & eaten by people (locusts, bugs, crickets . . . ) and provide a huge yield of nourishing protein, while also tasting delicious!
There are great, informative You Tube videos on cricket farming and high-protein flour. You should be able to track down ones shown in the following screenshots if interested:
