Re: Stop me from buying a car? Probably not.
Personally I find the following chip-based technology useful in my BMW 435d:
1. Heads up display
2. Sat Nav
3. Traction control
4. Stability control
5. Cruise control
6. Electric memory seats
7. Keyless start
8. Climate control
9. Tyre pressure monitor
10. Intelligent 4WD
Useful? Yes (apart from 7). Necessary, not by a long way. Sure I like my gadgets, but so many modern cars (say anything beyond mid noughties) are increasingly forgetting basic ergonomics especially in an environment where you really shouldn't need to look at the controls.
Not to mention how everything has to be "coded" to the car. I mean changing a battery on newer models requires a trip to dealer or laptop with ISTA or something. Changing bulbs used to be something you could do in 30 seconds at roadside, now you need to pull out headlight assemblies and/or disassemble part of the car to change a consumable.
I prefer "recycling" old(er) cars and am (possibly mistaken as I haven't done the maths) of the opinion that keeping the already manufactured older car going is going to be lesser impact on environment than it is to build a brand new car (especially now that they're likely start to need to be electric or at least hybrid) given i don't do silly amount of miles in a year either.