Operating a computer with mouse and keyboard is manipulating real, physical objects. I move my mouse and point it towards something, that is quite real. The computer is a tool, I do not want to talk to it. Imagine talking to your hammer and asking it to drive in a nail instead of just doing it.- Voice commands are hilariously inefficient. For simple commands like open an app, set an alarm etc. they suffice but fore more complex operations its just horseshit.