Some computer controls are very efficient and make great sense, like the fuel/air intake systems and peak transmission shifting. The problem is the manufacturers are out of control and making everything way more complex than they need to be. A prime example is the Emergency Brake on our car. Instead of a tried and true lever with a cable, it is electronic and very complex. On top of that, it isn't as user friendly and useful as the old type that could be applied in a braking emergency while driving. I have a service manual for our car and there is a large chapter devoted to only the electric Emergency Brake. That should tell you everything. There are some GM cars that have the radio controlled through the BCM, and to replace the radio, you need to have a technician program the computer to recognize it. Ridiculous.
All of this^^
Mechanical can be diagnosed by somebody with a bit of knowledge and skills. Diagnosing and repairing the current full blown computerized everything is out of the realm of the average guy, and even most private shops are generally a few years behind the curve. Vehicles last longer today, but when things wear out or break, it becomes a 4 figure visit to the dealer or almost equally expensive private shop.
A friend of mine is a GMC service manager and while looking under the hood at a 2020 Sierra 2500 with the new 6.6 liter, he mentioned the water pump is listed at $750 from GM. I'm sure the price will come down in a couple years, but still......
