I really don't know. New technology usually brings new problems.
But I remember some of the hollering that went on in the early '80s about how electronic engine controls would be the death of hot rodding. IMHO, it only ended up improving things.
That, of course, doesn't address the issue of stuff just not working anymore. I hardly ever farm out repair work, and the only newer car (haha, 2000 Civic) I have any exposure to hasn't had any issues. But I'm given to understand that repair work has followed a similar trajectory to parts counters: Follow the prompts, R&R the defective module.
I'm concerned, but hopeful that we'll get better about fault-tolerant systems and making sure the troublesome bits really can be R&Red. If I have a big concern here, it's that with the influx of electric/part electric cars we may see a PC-type period of technology changing so fast that a car which would otherwise be worth repairing isn't just because it's got a last-gen battery pack. If this phase happens, hopefully we bend back towards stability and repairability once the technology calms down.

