Read about kitchen corner nook
More likely you already have a breakfast nook if you have a large kitchen and a formal dining room. But if you have a regular size dining room and kitchen, then more likely you are thinking of whether you should have a breakfast nook. You should if you have the space for it, is the best answer. You do not really need large space for your nook since breakfast nooks are relatively small. What you need is a small area you can covert as nook with few seats and a table.