I understand what you are saying about complexity and repair technicians, but the same thing is happening to all other machinery and vehicles. New cars, pickups, heavy trucks and farm machinery all have adopted electronics to make them more reliable. The advantage to electronics is that it typically has an increased interval between repair over older style switches, cables, etc. It will eventually require repair that you probably can't do yourself, but the time between required repairs will be greater, so the machine will be more reliable with less downtime. We all have heard guys talk about these new vehicles (usually wife's car) and how they can't work on it like the old one. But, outside of a few oil changes they don't need much. Every farming generation this century has had to adapt to technology. Previous generations had to switch from threshing machines to combines, horses to tractors etc. We get to make the switch from mechanical control, repair and management to intelligent machines that manage themselves. There will be missteps and screwups along the way, and a few dead ends. But this is the future, don't be afraid of it.