wrong, we over 50 were taught to fix shit, starting at age 10 in my case.
I wasn't taught anything. I started to disassemble things early on. That was satisfying for about a year. Then I started trying to reassemble what I disassembled. Often things that were broken started working after me reassembling things and replacing broken parts.
When I was 8 my aunt gave me a broken radio. I discovered disco and a few years later punk and electronika. When I was 10 a neighbour gave me a broken TV, and a few weeks later a broken shortwave receiver. I was watching SSTV from half a world away a few months later.
I can't repair my current computer, phone, tablet, tv, etc. I can order the right part and swap that, but swapping sub-assemblies isn't 'repairing'.
Fixing shit is in my competence-envelope but current technology is mostly unfixable, unless you have unlimited facilities available.
Oh, I'm under-fifty.