This old chestnut; each to their own
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Extended service intervals were introduced simply to reduce fleet cost-per-mile. I remember when Rover (or whatever they were called then) changed the oil change schedule from 6,000 miles to 12,000 miles on the V8 in approx. 1982. No change to the engine, filter or oil-spec.. However the blurb, which I still have somewhere, simply boasted about how they were now cheaper to run per mile. As long as the engine lasts for the warranty period, that's enough.
Of course, the car's use is a relevant point, long m/way journeys being much better than short stop/start, so a strict mileage criteria can be misleading. Kia, for example, schedule 6-monthly oil changes/service on the V6-Stinger in order to maintain the 7-year warranty, presumably for a reason.
Different people have different views; some express a view that a filter performs better as it becomes clogged. Taken to its logical conclusion, why change filters at all if they improve with use. That's not my experience so I change them more often than scheduled, ie I think 60,000 on MB air filters is too much.
Me, I'm in the regular much-less-than-scheduled mileage change but then I tend to keep my cars for 10+ years, not just the 3-year warranty period. If I was buying a secondhand car, I'd rather the previous owner was like the OP.