I am sorry but you are incorrect, cooking will remove most of the fat anyway and it will keep the breast moist. Water will actually dry out the chicken. If I was suggesting lard or even most vegetable oil your assessment would be spot on, but olive oil actually has been found to have enzymes that lower blood cholesterol. Storing meats in fat is not the same as drenching them in it after cooking, olive oil is also a good preservative that will keep bacteria from forming in the meat while it sits int the fridge. Actually the chicken stock is somewhat of a live petri dish for bacteria.