Even if the term master where about that, I don't get, what's the problem. Having slaves is wrong, because these are human beings. Having other things like machines as slaves is not immoral. We also treat animals way worse then slaves and these are animate objects. And nobody objects to robot, which is just the word slave in czech.

The relation between a human and a computer is very much that of a master and a slave. I provide the resources, you do what I say, including self-destruction.