I feel like it's partly a consequence of a highly specialized society. I'm not sure how to fix it. There's an opportunity cost. Why would I change the oil in my car when it's $40 to get it changed at the shop? Since I don't change my oil, I now don't know the basics of how to jack up the vehicle, I don't understand how to use the torque wrench to tighten the drain plug and I'm basically missing all the fundamental skills so I got no knowledge to build on.
The other contributor, is that growing up in the city, in an apartment, there was never any opportunity to work with my hands. I still recall a shop class in high school. I got to use a lathe and a oxy acetylene torch. That was many years ago now.
Now that I'm older, I make conscious effort to learn how to do things with my hands. There are things that I still must outsource, when they are on a critical path. For example if the car is down because the suspension needs to be replaced, I'm not going to spend 3 months researching and fixing it. We need it now.
I've come to really appreciate the famous Heinlein quote:
> A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyse a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects.
Im also very much attracted to the idea of a "renaissance man" [1] :
> Embodying a basic tenet of Renaissance humanism that humans are limitless in their capacity for development, the concept led to the notion that people should embrace all knowledge and develop their capacities as fully as possible.
"Specialization is for insects" indeed.