Everyone has their own view about this, mine being that I prefer to buy higher mileage, well cared for cars, rather than those which have had occasional, or worse, regular short trip use, but showing lower than average miles, as I believe that cars deteriorate more from disuse than from being constantly thrashed.
Yesterday, son # 4 phoned to say "Guess what has just broken." His recently purchased weekend p&j, a 911 Turbo S had dumped its coolant on the A133 about 10 miles from here, fortunately he saw the mist in the mirror as he was accelerating and was able to pull onto a petrol station forecourt before any warning lights came on, or the temperature rose. Son # 3 and I went out to him while he called his recovery service, mostly to offer moral support. It's difficult to see what had occurred because of the low ground clearance (about 4"), and the undertrays, but I'm guessing that either a coolant pipe / hose has failed or come adrift just aft of the radiator. A proper pita as the car seems really good, as 911s go, but beset by faults, one after the other. The previous owner had covered about 4,000 miles in four years. Credit to the dealer for fixing everything without question; they have now spent more than £5k on it since he bought it. I really hope that when this is repaired, it will be the last of the teething troubles, and that he can start to enjoy it with confidence.