First, you're not realizing what I bill those customers. I don't want to wave money around on Slashdot but I assure you, you too would drink an unoffensive bottle of Soylent for that much. The main thing it buys me is freedom, and there is no shortage of pleasure coming from that. I can work on what I want most of the time, or not work, if I just keep a few of those customers.
Second, you can't have any of the real pleasures in life without your health. You are evolved to be attracted to foods that would have been infrequent windfalls throughout most of the evolution of human beings. Now, you can have them for every meal, and your body is sending you the signals to do so despite the fact that those foods will ultimately be detrimental to you. If you are still compelled to eat them, there's a pretty good chance that's the addiction talking.