Re: "this isn't a fly-by-wire fighter jet you know"
In modern cars, it is very much drive-by-wire, especially in cars where stability control (ESC) is standard, or have any optional features along the lines of cruise control (or the adaptive variant), adjustable speed limiter, lane keeping assistance or any number of other features that modify the throttle, brake or steering input in any way.
Not to mention that ABS is computer-controlled, as are TCS and TVC (on cars that have them), and so are plenty of other safety features (whether you realise the car is doing them or not). Sure, you don't need these things because these systems are technically non-essential - you could own a car that has none of them - but if I'm about to be involved in a potential accident, then I welcome all the computerised help I can get to minimise the impact.
Finally, a number of parameters to actually keep the engine itself functional are typically regulated by a computer too - things like idle revs, fuel/air mixture and operating temperature. That's partly why modern engines are so smooth and actually work properly in extreme cold, extreme warm, etc.