I’m with the OP.
Why have one ? Simple. Too many complete **** on the road driving badly. Same reason I have one in the push bike.
That they’re not built in , and not even a manufacturer optional extra is annoying- I have to fit a crappy bolt on aftermarket on instead.
The Subaru i tried out a couple of weeks back. It’s got 3 cameras already looking forward for the anti-crash system, 1 looking back for reversing, and 2 more on the interior to monitor me paying attention. So all it needs is the rear one and 1 of the front ones feeding into a recording device – either on board or just an SD card.
For those who don’t thing they want one… good luck proving it was the other guy and not you jumping the red light when you get T boned on a traffic light controlled crossing. Having been 0.5 seconds off my wife, daughter, dog and myself killed by some total and utter **** running a red light at 60mph+, it’s nice to know there’s some proof of who killed whom afterwards.