Why human eat leafy vegetables if they digest cellulose?

Humans do not digest cellulose. The reason why humans eat leafy vegetables is due to the other beneficial nutrients they provide, such as vitamins, minerals, antioxidants, and fiber. While humans lack the enzymes necessary to break down cellulose, the fiber provided by leafy vegetables can still be beneficial for digestive health and can help to promote satiety. Additionally, some of the cellulose in leafy vegetables can be broken down by the beneficial bacteria in our gut microbiome.