For the most part I’ll take the good with the bad (my biggest complaint is bemoaning the loss of the manual transmission), because the are really good. But I’ll also keep my “pure” vehicles.
IMO, it's a mixed bag.
Closed-loop engine management is the best thing that has ever happened to the automotive industry. The gains in power, fuel economy, emissions reduction, reliability, and maintenance largely come from this single bit of technology. Now, it has markedly increased the complexity of the engine system, but I would suggest that it's been worth it. Similarly, heads-up displays keep the driver's eyes on the road, where they should be, and rear-view cameras make parking lots infinitely safer. Hard to argue with airbags, crumple zones, side intrusion bars and seat belts, too.
ABS started life as a disaster (all-wheel linked systems that actually reduced overall threshhold braking performance), but has evolved to the point where no human can out-perform it on clean, dry pavement. There are some low-grip situations where it needs to be disabled, but they are not "normal" driving unless you compete in a lot of rally racing or regularly drive in sand or snow.
HOWEVER, some of the other systems are only useful if the driver is....well....not terribly skilled or attentive. Brake-based traction control, for example, can actually cause a loss of traction if you are driving right at the limit of adhesion (read any race driving text if it's not clear why this is the case). Similarly, the various flashing lights and noises from the "warning systems" often serve to distract the driver right when they need to be paying attention to what's going on around them.
Finally, the auto-brake and lane-keeping systems are just plain hazardous. I have seen far too many near misses in heavy interstate traffic where a driver (car 1) cutting in front of another car (car 2) causes the auto-brake to slam on the brakes, resulting in a third car (following car 2) having to take evasive action. When car 1 is going faster than car 2, there is absolutely zero need to slam on the brakes; the "safety system" is creating a hazard that is completely unwarranted. Similarly, lane keeping systems are often confused in construction zones where there are multiple sets of lines and the actual safe path needs to be determined by looking at signage, flags, barriers, barrels, etc.
There is a reason that every single racing and track day sanctioning body will require you to disable "emergency braking" and "lane keeper" systems before going out on track - they are a life safety hazard.
