I have repaired most things, laptop keyboards, washing machine oil seal, pumps, belts, microwaves, sewing machines, filters, printers etc. I draw the line at cheap items - $20 toaster, $10 electric kettle - although my husband puts them back in their original packaging, even though we can't get parts (they've done 10+ yrs work) intending to repair one day. He says "A man made them, so a man must be able to fix them."
We are not "ordinary" consumers, as we have an extensive workshop, and my husband is never happier than when he is fabricating a part, and my father was an electrician.
Our biggest disaster is evaporative air conditioning. We were always getting the installer back because it didn't work, burnt out motors, continually replacing parts to find that wasn't the problem, Hard to get him back - 3 years one incident, usually tries to sell us solar power, large reverse cycle air con, or get free advice, anything but fix the problem. We've had several goes at it ourselves, gave up and bought a $6,500 unit from him. Isolated area, no one else around.
When I was single, working long hours and often far away from civilisation (building roads), I did hand over some things to "experts". I wasn't short of ability, but I was time poor and camped out away from tools & shops etc. I lost two sewing machines - went in with a problem and came out in parts with an offer to sell me another one.