We continue to eat them simply because they are indulgent. Food is a celebration, and feasting has accompanied celebration throughout human history. This is as true in year 2015 AD as it was in year 2015 BC. Birthdays, weddings and holiday celebrations—what do we eat? Cake. Ice cream. Pie. Not whey powder shakes and lean pork. Why? Because we want to indulge. The Atkins diet does not allow for this simple fact, and that doomed it to failure.