I've noticed that major appliances just don't have the lifespan they used to have. I see my kids buying refrigs, washing machines, heat pumps, etc. because of catastrophic failure forcing replacement every 7-8 years vs 15-20 for us when we bought ours. Anecdotally, it seems to be circuit boards failing more than routine electro-mechanical problems. And the cost of trying to service them is prohibitive with a substantial risk of failure to fix.
Back a few years ago, I saw a youtube where a guy replaced his dishwasher's control board with an arduino. As I watch arduino & rpi communities develop and progress, I think there will be an increasing effort to replace expensive, stupid control boards with inexpensive, smart computers.
Just my thought for today ...as I work on my dishwasher.
BTW, my microwave is approaching 20 and my trash compactor is 35.