True. But the flip side is that most of the newer equipment doesn’t need as much work. I remember being able to work on the 1970s vehicles at home; but I was always working on them for tuneups every 20k miles: points, condensers, rotor caps, plugs, wires, timing, etc…. When is the last time a modern vehicle needed a tuneup? New plugs every 100k miles and regular fluid/filter changes is about all that’s needed every 100k. The comparison of vehicles to tractors isn’t exactly the same, but the point is that the new systems typically don’t need a lot of scheduled maintenance or repairs. People post here when they have problems, but the majority are happy with their machines and not experiencing problems.