> It's satisfying although likely not money-saving unless you don't put a value on your time.

Being able to repair my Sears Kenmore 80 Series washing machine from the late 90s has definitely saved me money. I've made exactly two repairs in the last 15 years, each costing me less than $50 dollars in parts, neither taking more than two hours to complete, and both saving me from having to buy a new machine. If that's not money-saving, then I don't know what is!