Why Do We Still Have Remote Controls?

I was thinking today about growing old, calling my wife by my new pet name for her ("mother"), and asking her, in our old age, to "Pass me the remote, mother." And then I got thinking - we won't have those barbaric things in the future. We'll just tell the TV what we want it to do and it will do it.

Then I really started thinking - why they heck don't we have voice controlled TV now? Why, for the love of Pete, can't I just say, "Change channel to History Channel... raise volume... show guide..." etc. Well, I suppose I can say that to my TV. It just won't do anything.

Man, I just feel like the future is suppose to be here already. I mean, we already have voice recognition technology for computers and such. Where is it on my TV? For that matter, where are my moving sidewalks (besides the airport), flying cars, and mandatory state-issued unitards? Gotta keep waiting, I guess...