Our parents didn't think it was important. Our kids don't think it is necessary.
Imagine how horse farmers felt about engine maintenance on the first automobiles. Early adopters probably knew everything about how to fix tractors and cars. But today, how many people know how to change their own brakes or flush the coolant?
Life evolves, and transitions come faster with every generation. It's good that nobody knows how to use a sextant or a fax machine.