I like eating home cooked food. I like time. These two goals are at odds with each other, because making home cooked food takes lots of time.
Some nights, I just don't feel like cooking or I don't have time to cook. I just want something quick to satisfy my hunger. I would probably end up eating fast food, which is terrible for me nutritionally.
Soylent is for those nights for me. When I don't feel like cooking and I just want to feel full. It would be nice to have something filling but also healthy, and that's where Soylent comes in vs just getting fast food.
I imagine that most people who preordered Soylent are similar to me in this sense. Very few people plan to stop eating altogether and subsist solely on Soylent.
It's not about replacing food, so please, get over that idea.
If you've ever come home from work, and hacked away at a project until the wee hours of the night, and thought "damn, I'm so hungry, but finishing what I'm working on is more exciting than eating right now. I wish I could just make my hunger go away so I could focus on what I want to work on." then you might be able to understand my desire for something like Soylent.