Oh <b>please.</b> The M-7s are as computerized as the DE/DMs, and they run just fine. The ALP-46s are as computerized, they run fine. Your average automobile lives and dies by it's computer, and they all run fine.
The problem with the DE/DMs isn't the computerization, it's EMD is incapable of building a decent passenger locomotive that works right. A good chunk of the thing's problems - frame cracks, vibration, high fuel use, poor overal reliability - have NOTHING to do with them having that evil computer in them, and a LOT to do with just piss poor design and testing.
As for the F-59? What's wrong with it? It's a piece of junk, that's what. It's based of technology that was obsolete years ago. Nobody in their right mind buys anything with DC motors in it anymore, because they suck. They're fragile maintenance hogs that perform like crap. AC's here, it's proven, it works better, it's not going away.
You're not going to see movement away from computers in these things, guys. DC traction's dead, emissions regulations effectively require electronic controls, automatic diagnostic and performance monitoring is where industry's headed, redundant safety systems, better wheelslip control, equipment protection.. There pressure today is cheaper, faster, cleaner. It's only natural that the rail world is going to implement technology that's been proven for the last 20+ years everywhere else.