What are you really addicted to?

Are people addicted to the caffeine in their coffee or the sugar. Many people load up their coffee with all kinds of stuff, especially sugar. I do not think that coffee is something that you need to give up but many people cannot drink it without having a bunch of sugar or artificial sweetener in it. Part of this is due to altered taste buds. If you eat a lot of sugar or artificial sweeteners then black coffee will taste very bitter to you. However as you get away from sugar and artificial sweeteners your tastes will change and things that did not used to be sweet will start to have a better flavor. Many people often complain that they cannot give up their coffee and I don't think that they should have to in the majority of cases, but the question usually arises as to whether they are addicted to the coffee or the junk they put in the coffee.