In my experience it just comes down to time and competing priorities.
Would I love to deep dive into my fuse box and learn how to rewire it? Very much so. But the limited free time I have needs to go into side projects and life goals.
I say this having just come out the other side of a long period of learning how stuff in my house works. While it has certainly been satisfying, I'm looking forward to just paying people to do things in future so I can focus more on what compels me.