There are people who do not interact with computers at all. There are areas where there is no electricity. There are people in war zones. Examples that comes to my mind is, a janitor, an oil rig worker, a miner, a private in 3rd world country. Perhaps they never interact with computers in their lifetimes.
A janitor can't program his cleaning bots without it.
The Deepwater Horizon movie clips show workers arguing over all the things that have failed diagnostics testing, and how important that is or isn't. They're interacting with machinery 5.6km down.
Developed-world underground miners are already using heavy machinery that has to conform a cut to a specific 3d model which is adapted to the seam and the structural engineering of the tunnel. Open pit mines have similar structural concerns, but also environmental remediation issues. The trucks making that long journey down into the pit are all going robotic now.
An infantry unit in 2025 that hasn't already won or lost on overwhelming air superiority, is rapidly adapting drones to help it fight.
If you aren't making software, you're at least using software that somebody else created, you need to understand the problems and strengths of a software aided approach (as opposed to an apprentice aided approach, or a mechanically aided approach) and you're in a (hopefully) collaborative relationship to make that software better.
Try to find stats on mobile phone penetration in the poorest countries for a reality check of a broad "never in their lifetimes". But for this level of needless pedantics you don't need to go anywhere: in the richest country a baby dying before leaarning how to speak obviously will never interact with a computer and won't need to learn any language.
(though "obviously" I only meant people interacting with computers - among which every single one could benefit from adding some level of automation)
