In moderation, neither are harmful.
Are we talking every single day, for the rest of your life? There are too many other variables here. For instance, let's say you eat two cupcakes every day for the rest of your life. Well, what does the rest of your diet look like? How much exercise do you do? What is your basal metabolic rate? Do you have a history of, or a family history of, diabetes or signs of a metabolic disorder/syndrome?