There is absolutely no reason the general public should be using the traditional desktop computer. They should be using limited use devices tailored to the things that people want to do the most – prattle, get directions, browse the web, and buy stuff. They can use their smart phone or tablet for these. Such devices fit the technical commitment level of the general public, not demanding much in the way of learning or expertise.
Computers should be for computer people who are willing to make the investment that they require to use properly and effectively. The general public has consistently shown they do not have this capability, and only serve as drag on those technical.
As we move forward and the majority of the population is on phones and tablets those who have made the investment to use computers well will have a decided advantage in our increasingly technological world.