Should people say I don't eat cake or should people say I don't eat cakes and why?

People can say either "I don't eat cake" or "I don't eat cakes," depending on the context. "I don't eat cake" typically refers to cake as a general concept, while "I don't eat cakes" suggests a refusal of all types or instances of cakes. If discussing cake in a broad or abstract sense, the singular form is more appropriate. Conversely, if emphasizing various types or servings, the plural form works well.