Reply #168: that's not universally true -it depends a great deal on what you want to do in life.

[dysfunctional press]

plenty of people can get by just fine without computer skills and do.

being president hasn't ever required it, and still doesn't. that's what staff and interns are for.

for instance- john mccain has been a u.s.senator for 23 years just fine without having any computer skills.

your cliche line:
"Using a computer is necessary for today's world or be left behind"
doesn't hold true for all people in all circumstances- it depends on what you do and/or how you approach it.

and not as many people in their 70's are necessarily worried about being 'left-behind' (except maybe the ones over at rapture ready)
and there are still a lot of computer illiterate voters out there who can sympathize with him on it.