I have been thinking about that lately. How I want to talk to my computer to do simple things like go to this web site or play that song. Not as a replacement but as a supplement, where I still use a mouse and keyboard. This allows for me to speak and type at the same time.
I also have been thinking about audio logs where I can keep a daily or whatever log of the happenings in my life. The audio interface plays right into that where I can just say to the computer "Personal Log" and it starts recording.