I, myself, personally like cheese. It's very easy to use and has a variety of different applications. It requires very little to no programming knowledge whatsoever, and it works well with other sources, such as bread, pasta, and bologna. Considering its compatibility with all of these other types of edibility, plus it's uncanny ability to change forms to fit the situation with a simple catalyst, like heat, I don't see why we didn't start using it in the first place.