And you might be able to DIY right now but once you've had one accident that reduces mobility or, let's say, gumption to tinker, all this can become a burden.

And you might be able to DIY right now but once you've had one accident that reduces mobility or, let's say, gumption to tinker, all this can become a burden. I have this image of the Father in Zen and the Art of Motorcycle Maintenance, harping on his friends not taking care of their BMW motorcycle, letting it heat too much and not checking on it at every stop, while he's watching his Japanese model like a hawk, looking at temperature, doing mechanics on the road and so on. He's quite flustered, and condescending, saying they're not comfortable with the technology and the technological world, that they could live with a leaky faucet and not care because they can't fix it themselves. He's calling them 'romantic' and even when saying he understands how they see the world, still comes of a bit 'this is a bad state of affairs'. I used to agree with him. I'm a tinkerer, I love gadgets, I can handle imperfect, I'm not afraid to drive my e-cargo with finicky not-fully-working brakes and 'you need to use it just right' stuff instead of bringing them to the shop or doing the big repair. I can repair but I usually also understand enough to know it can wait. That's me. Same in the house, I manage, I repair, I workaround while waiting for the thing to really break (money is tight, etc) and can live with imperfect stuff and have patience when things break down. Then my spouse broke her knee. I had to handle my 3yo twin girls alone. The house. Twice the chores. The triple workload, while still doing productive work and trying to handle the first lockdown... The disabled partner in need of help for everything, and every hour or two every night in need of ice or pain relief. Utterly tired, sleepwalking... My tinkering life stopped right there. I need stuff to work even when the world is falling down, I'm dead tired. No firmware update in the middle of anything, no crash while bathing the kids, no fucking reboot during a wash cycle that I needed to finish and set to dry before going to sleep at 4am to wake up at 6. You need things that absolutely work 100% of the time, just in case you're not able anymore. So, like one other commenter said: something augmenting basically working stuff is the bare minimum. Mechanical switch is the most robust, have it working even if the system is ripped out. Electromechanical switches under your hand and display on the dashboard, in cars and not the damn crashing 17inch flat screen. No fucking software between me and the essential life support stuff. Have fun over that but make it fall back on 'what we had before' without my intervention.