Over the years, I have tried to teach hundreds of Soldiers how to be mechanics. I always say " You can tell them to turn the bolt left or right, but only a few will understand why you turn the bolt left or right."
I get "Scientific Methodology", but there are many who are not wired that way. There is nothing wrong with them, they have other skill sets. My wife for example is a wonderful cook, but she does not understand why I change the oil in the cars. I have expanded it in detail to no avail.
I agree and will take it a bit farther. It is also a generational thing and technology advances. When I was growing up, "we" played outside, explored the woods, worked on our own cars, appliances and anything else that did not work. Throughout my many years, I never paid a repair person to do anything unless it was with the refrigerator or furnace. I rebuilt my own automatic transmissions, engines, built numerous sheds from scratch, addition to the house, and along the way invested a lot of money in tools, test equipment and books (prior to the Internet), yada, yada.
These days young people's focus have changed to electronic based, sedentary lifestyles of various designs. Most of the people in a kayaking club I used to belong to were in the upper age groups and most other river kayakers I saw while kayaking were not all that young. And my kayaking days have slowed down a bunch due to necessary tractor purchase and a near drowning last spring in class III/IV rapids.
All of this said, I am now taking my new(er) auto to mechanics for some scheduled maintenance as I can't even find the spark plugs on my 2008 Suburu Outback XT and I am tired of rolling around in the dirt under automobiles doing repairs. Some of this stuff is just not worth the effort to me these days and I would rather be productive elsewhere doing other things.
But a tractor is new to my environment and my dealer is 3 hours away. So I am learning, modifying, fixing and enjoying most of this. But I have the background and many "newer" folks do not