It does require forethought, planning, a knowledge of how to cook food, and the ability to source and store ingredients, however. All of which sounds like too much of a hassle for me, to be perfectly honest. Rob Rhinehart, the creator of Soylent, doesn't even own a refrigerator (not that I'm suggesting people should be more like Rob...). While you may find it sad that others don't have the time or patience to cook, for a lot of people it's just one of those things they'd rather not have to deal with -- and for those people, Soylent isn't an alternative to cooking real healthy food, but rather to buying a burger at McDonalds.