"Yah know, to listen to you guys, you'd think the only stuff worth knowing was computer stuff, and anyone who doesn't understand computer stuff must automatically be, like, yah know, an idiot, and computer guys are gods who know everything that's worth knowing."
I drive a car. I don't do it for a living and it's a long time since I was able to do stuff like take the head off and reseat the valves (MGBs were nice to work on). Nevertheless I need to know where all the controls are and what they do. I also need to know which side of the road to drive on, what the various road signs etc. mean.
Back in the day I used to be a laboratory scientist. I needed to know things like how to set up a microscope, how to balance the tubes in a centrifuge etc.
In short, I, like everyone else need to know enough (NB enough, not everything) about the tools I use to be able to use them. Why should it be different when the tool in question is a computer, especially when it's being used as part of one's job?