I beg to differ. The latest Bond hacks M's password and uses the computer to find all sorts of stuff.
How important is it - not very in the long run. I mean if you can use a phone you can order stuff, or actually - horror of horrors, go out shopping. You can buy maps. The library is there for research, altho it may be dated.
I carry a stupid phone. It makes calls, and odd people I don't know text me and in return get rude texts in return, the only time I text. No camera, no internet, no high speed this or that. It makes calls.
Do computers make things easier, yes. Could I live without it, probably.