And I realised the other reason I don't like it - the failure mode of typing is that I hit a wrong key, with a recovery action of "stare at the keyboard and make sure I press the right one next" but the failure mode of voice control is that nothing happens, and the recovery mode is "Try again repeatedly, with no real idea of what you need to do differently to make it work".
I find "things not doing what they're supposed to" incredibly frustrating - it's one of the main drivers of my computing knowledge - struggling for ages with computers, until I've fixed whatever the problem was, is a great way to learn how they work. But a voice interface is mushy and vague, it's not something I _can_ understand without seeing all sorts of diagnostics which just aren't available to the users. Which, largely, means it's just not for me.
Original post on Dreamwidth - there are comments there.