Fuel ethanol is significant but not the largest use of corn. Livestock feed is the largest use of corn, which connects into the larger conversation about food and sustainability. About 45-50% of all US corn crop and 70% of soybeans is used for animal feed. Almost all of my crop goes to those uses eventually.
Here's some info about how the market breaks down if you are curious https://www.ers.usda.gov/topics/crops/corn-and-other-feedgra...