Only yours
Fats/Oils.
fats are not good
Nearly all cakes are rich in fats. The one notable exception is angel food cake, which is low in fat, but high in sugar.
Fats in cupcakes serve the same purpose as they do in cakes. The fats in cupcakes give them moistness, flavor and a better texture. Without fats, they would be very dry and unappealing to eat. There are several different types of fats that can be used in them, and most recipes do allow for substitution of one type of fat for another. Some of the fats that are used in cupcakes and cakes are shortening, butter, margarine and vegetable oil. You can also use olive oil and coconut oil in many recipes for baked goods.
fats and proteins
Until recently, the necessary sugar, eggs and other ingredients required to bake a cake were fairly expensive and regarded as luxuries by most people. Cakes also required time and effort which working people could not easily spare. Some cakes require extensive beating that was very difficult and time consuming before electric mixers became common in home kitchens. So elaborate cakes were served only on very special occasions, such as weddings, and simpler cakes were enjoyed for birthdays and when entertaining guests.
fats and oils are examples of components of food which are required by our body.
for all animals and people
yes
Actually, no form of cake is very healthy. Nearly all contain high amounts of calories, fats, and sugars.
Carbs and Fats ex breads, cakes, beef, butter
I think it's used for flavor and moist-ness, and also so the cake won't stick as much to the pan.