It's because fully trained robots only know how to say yes or no and not to have an opinion.
That's why the capitalists are trying to automate everything these days.
But to be honest people around these parts don't know anything about courtesy. Most of the people in the GCC are from the 3rd world and life in these parts is basically like living in a Jungle. You just put your head down and try to get to the top, nothing here to do but to make and spend money. Quite sad. Hopefully we'll see better days