The point of Soylent isn't to never think about food again. It's just a default so when you're not thinking about food, you don't start eating badly. The creator says he goes to get really good sushi a few times a week because he does enjoy it. But if you're preoccupied or pressed for time for some or most of your meals, you can just have Soylent instead of defaulting to fast food or whatever crap is laying around your apartment.