Decades ago when a motorcyclist, I had an old Mini Metro as my winter car. This was the car that was supposed to replace the classic Mini but never did - the nearest equivalent would be a 2-door Plymouth Horizon, though the Metro wasn't a stylish as that..... Mine was pensioner beige for extra fashion points. It was a car that could have explained to cockroaches how to thrive, not just survive, a nuclear winter as there was almost no level of abuse that stopped it. When it started overheating even in winter, I decided maybe it needed most of the radiator fins - on our salted roads, the pattern of the front body openings was repeated as missing fins on the radiator core. So I took the rad out and went to a local rad repair shop (you know, a proper grubby place) and the guy came up with one of the nicest car things anyone has ever said to me: "Do you not think you could get another weeks' use out of this as it is?"
The Mini Metro. The crowning t^rd in a pile of carp produced by British Leyland that included the Maxi and the Princess.
I prefer to change my pads and rotors at the same time. I also bypassed my pad wear sensor. I service and check my car on a regular basis. I just like the way a new set of pads and rotors bed in and feel. Personal preference only as I know a few guys who reuse rotors with no issues.
IMO, the pad / rotor question has a lot to do with (a) what pads you run and (b) whether you actually run pads until they're worn out. For MOST folks, who only run OEM or similar street pads and use them until they're gone, the pads and rotor probably wear at a similar rate. Makes sense to change them together. For some folks, who may switch pad compounds for street vs. track vs. autocross, etc., or who may experiment with several different pad compounds, then it's unlikely they wear at the same rate. Also, some aftermarket pad compounds will slow or speed rotor wear. So, again, this changes the relative wear rates. Me, I think the only pads I've actually worn out on a MINI are track pads. I always end up changing out others earlier for one reason or another.