If we're inviting hearty discussion, allow me to wet my posting feet and sheepishly admit that I sort of feel bad when I let my computer grind away for hours on some kind of crazy computation. To generalize: the less we treat even simple "deterministic" systems with contempt, the less likely we are to get callous with respect to the big, humanoid, meat-filled system-things we interact with on a daily basis.
Why wait until they are armed and angry to start thinking about machine rights?
I name most machines that I interact with, and treat them with the respect I would a friend. I take care of my machines, and they tend to take care of me.