Many people are very uncomfortable with the degree to which their work and life depend on computer systems they do not understand. They feel vulnerable to computer problems, pressured into depending on more tech than they really want, and do not believe they have the knowledge or resources to remedy problems with it.

About 1/3 of my customers. They mess with my electrical drawings because they can’t mess with the software and try to redesign stuff so it doesn’t have software. Or even worse they try to do it themselves and need me to bail them out. Generally I don’t make a big deal about it. I already have designs for morons so I just give them a moron special. But yeah I have lost it a few times. My job is to build systems, not to reassure idiots that I will manage to overcome their mistakes.