Many people in their late sixties, and beyond, are paying rent. How is that different (other than the obvious).
Because the context of that particular discussion was a poster claiming that for can people who already owned a house, ‘moving up the ladder’ was not only a good thing, but a thing that most people should expect to be doing. Despite it involving borrowing much more, probably over a longer term (at least one person on this thread has admitted to a 35 year mortgage) and going back to the start of a new mortgage term with each move.
Given the choice, who would load themselves with a ton of housing debt extending to your late sixties and beyond? Because that’s what ‘moving up the ladder’ involves when prices are increasing but average salaries are not.
The choice in this situation is not between paying a mortgage and paying rent. It’s between accepting that you will probably stay in the same type of house you are in now, unless you expect your income to increase considerably, and loading yourself up with more long term debt in order to ‘move up the ladder’. I did the maths upthread.
As other posters have noted, paying tons of interest on mortgage debt is the best way to impoverish yourself in the long term. If you keep extending the period over which you pay a mortgage, you increase the amount of interest you pay to lenders. They love long mortgage terms. All that extra money you pay in interest over a 30 or 35 year term, or even, God help us, a 40 year term, compared to a 25 year term, could have been going into a pension. Instead it’s servicing mortgage debt for your entire adult life rather than for 25 years, which is what a standard mortgage term used to be.