Why do we eat processed foods?

And why do we allow our government to permit this? According to the definition: An animal = "A living organism that feeds on organic matter" I ask why are we feeding on inorganic matter then. Organic means "from life". Mashing rocks into chemicals then putting it in food to enhance flavor, preservness and texture is not organic. No doubt eatig inorganic substances is the reason people are attracting chronic cancers and diseases. You are what you eat, if you eat something foreign for the body, your going to get a netative outcome. Likewise if someone foreign comes into your home, your going to be like wtf?