Those are niches. Most computer use is and will be going fwd, consumption. Majority of creation will be photos/videos/minor typing (txting, tweets, short emails)/other forms that don't require keyboard.
I don't doubt that most people will not need a keyboard most of the time, but not needing a keyboard in the house seems more likely to be the niche. The niche will be 23 to 30 year-olds who have finished school but don't yet have kids in school, and the 55's, and up, whose kids have finished secondary school. Perhaps the computer will again be relegated to the spare bedroom / home office, but I can't imagine a scenario for the majority of middle-class households that doesn't have some sort of physical keyboard.
This is a tangent, but I'm a grad student in English lit at the University of Arizona, and, based on what I've seen, the answer is often "no;" a lot of students say they've never had to write anything longer than two or three pages before taking Intro to Comp.
Some, to be sure, have done substantive writing, but that appears to be the norm.
A lot of 18-year-old freshmen also appear to be MUCH more proficient at typing on phones and tablets than I am, which definitely gives me a bit of culture shock, and reminds me of the typing proficiency I have that many of my own professors appear not to.
The PC was doing just fine before websurfing came along and even before DVD playback.
And yes, don't complain about being downvoted. From the HN guidelines, http://ycombinator.com/newsguidelines.html
"Resist complaining about being downmodded. It never does any good, and it makes boring reading. "
If you look at my comments you'll see that I don't use this form very often - or maybe even at all. I had slightly worse day yesterday and that's the result and I'm sorry. Do you think I should delete this and the three more comments in this thread, which were made in similar manner?
No (imo). Obsessing about 'correct form' and karma is just as bad as completely ignoring it. Everyone gets downvoted once in a while. Learn from your mistakes, and go with the community ethos, and you'll be fine. Karma is just a number on a webpage.
I didn't even think about karma, honestly, I asked having in mind the quality of the thread. I'm still rather new here, I started posting just a couple of months ago and learned by watching others and not from a textbook of rigid rules and that's why I'm still sometimes unsure about how to proceed; even more so because I actually do care about the 'ethos' (although I probably wouldn't use this word) more than about points of any kind.
Either way, thanks for advice and for taking the time to respond even though this was probably one of the least exciting topics you could discuss here, I appreciate it very much.