Maintenance can be carried to the extremes and “If it ain’t broke don’t fix it” is argued by some to be a great way to save money but not for me. I rotate tires about every 10k miles and closely inspect the brakes then. If I can’t be certain that they will last till the next service I replace them. But I don’t replace rotors if they show no noticeable wear. And bleeding/flushing the brakes is part of the routine.
I’m glad to throw away 2 to 3mm of brake pad to avoid a brake problem that would likely occur at a bad time.