High mileage cars are usually bought by those who cannot afford to compensate, yet have to.
The problem is the varying interpretation of what high mileage is, as well as the most significant underlying problem, which is ignorance/non education about cars.
Your example is true for poor people who need to look at something with say, over 200,000km and therefore severely depreciated, in order for their car to be within their budgetary means.
±100,000km is not high mileage, yet is incorrectly believed by most people to be high mileage. They therefore want to spend R130,000 on a cheap entry level car with less comfort, safety and performance. This is the basis of many of these exact threads. Wanting low mileage and service plan in order to alleviate fears based on said ignorance and non education about cars.
Clever people know that this is nonsense, and therefore have no problem buying mid mileage cars around the 100,000km mark, scoring big time.
The irony of it all is that you've own/ed plenty of high mileage cars, and buy them too. Yet advise people completely differently. You cannot be taken seriously at all. We all know this, I'm just mentioning it for the sake of the non regulars.