Speech recognition has steadily improved over the past 10 years. You can see a few examples: Android system wide speech input, Siri iPhone app (which Apple bought), Dragon Naturally Speaking advertises upwards of 99% accuracy for general purpose dictation, and the latest speech recognition IVRs do pretty darn well; try calling Amtrak or United. If you try to dick around with it, have a strong accent, or are in a noisy environment, you won't get (as) good results. However, as a whole, it's greatly improved.