Sure, you probably don't decorate too many cakes. But it's not because you don't want to decorate cakes, it's just because it's kind of a pain and you aren't great at it. But if you had an Automatic Cake Decorator? Well then, you'd surely decorate at least twice as many cakes as you do now.
There's not much info available on this magical contraption other than that it appears as part of the Design Criminals show at MAKVienna, Austria. But come on, don't try to pretend like you couldn't make use of it.