Since I can't remember when, I've always tried to fix anything broken, rather than buy a replacement. Here we're talking cars, bikes, washing machines, kettles and pretty much anything else. I have three grown up children who either buy a replacement or 'get a man in'. Is it a generation thing?????
Well, an example is a Kenwood Chef that belched forth smoke and died. A google found this to be quite common - a repair kit of a couple of resistors etc cost a fiver off ebay. Ten mins with a soldering iron had it working again.
As said a lot of things are not easy to repair anymore especially now we have electronics involved. Also the cost of appliances has come down to the point where repair is not always the best option. For example: is it worth spending £160 plus the VAT to repair a $ yr old washing machine wnen you can get a new better one for £300.
Like yourself I try to repair things initially but when it comes to cars I have given up unless it is obvious. Much as I hate to admit it I have taken my car to local garage to have headlamp bulb changed and a wiper blade that came off.
There are loadsa helpful DIY /Repair videos on Youtube; when it comes to electrics and/or plumbing issues I nearly always get a qualified professional in or else take broken appliance to a local repair shop.
I've bought tons of repair gadgets/tools/tapes/washers/soldering-irons/screws/ladders/workbenches etc etc in the past but somehow never get round to using them much.
Products with inbuilt-obsolescence is the way forward, no doupt about it.
As a responsible web site, we can't possibly endorse the idea of unqualified people undertaking their own repairs on electrical items. On average, there are 350,000 serious injuries caused by electrical accidents in the UK every year.
Obviously, not all of these are the result of DIY repairs, but many are.
Life is too short anyway, to risk ending it or being seriously injured by messing about with electrical items - leave it to those who are qualified.
I remember a few posts back in the dim and distant where people asked about changing the fan on a PSU. General advice was only if you really know what you're doing as there were sufficient decent sized capacitors to give the unwary or inept a really nasty jolt if they were mishandled.