「 Fristi 」 I'm not sure I'd be a fan of speaking to computers like that (for privacy reasons, also sounds impractical for many things, and it's loud, and I don't like speaking, I'm fussy)
I don't think the problem is the way of interfacing exactly (voice, keyboard, touch screen, mouse, trackpad) but the interface itself ; voice could be useful (important for accessibility, too) but I'd mostly see it as a way to supplement typing or to handle background tasks/physical things ("turn off the lights", "change the thermostat", etc)