Why are cakes used for wedding cakes and birthday cakes?

Answer 1

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.