Having robots raising our food is probably a great idea, since it presents less oppurtunity for contamination. Contaminations is a big problem now, there is always some food recall because of bacteria in food or something similar. Not all of these are directly caused by humans, but I would say that a good part of them are. Having robots to do part of the work presents less oppurtunity for contamination.
It seems to me that running anything at a higher speed will kill the battery life. There are almost no reasons to do this anyway, since things are already fast enough on an iPhone or Android based systems already.