About thirty-five years or so ago there was a “financial guru” called Bob Beckman who had regular radio slots:
https://en.wikipedia.org/wiki/Bob_Beckman
At that time I had owned my house for about five years and since I’d bought it (with the aid of some double-digit inflation) I had seen its value (OK, in price if you don’t like the term value) increase by about 2.5-fold. Mr Beckman, although worth a shedload of cash, told us he owned no property. He continually prophesised the collapse of house prices in the UK as he could see no way that the continued price increases could be sustained. There was no way, he said, he would invest his cash in something which was bound to crash.
Fast forward to the end of my mortgage about fifteen years ago. I had taken an endowment mortgage (because mortgages were hard to come by when I needed one). I was lucky enough to avoid the endowment shortfalls that many suffered and in fact had about twice the cost of my mortgage repayment to cover the debt. In fact, so great was the decrease in the relative cost of my house that I could have almost repaid my mortgage on my credit card.
Fast forward another fifteen years. If I sold my house now I would easily get around thirty times what I paid for it, probably more. So to address your latest post, there is no real relationship between house values and earnings. And indeed, if interest rates did return to a proper level many people would be in severe difficulty. But that is most unlikely. At times during my mortgage I was paying 15% and as far as I can recall, never paid less than about 6% or 7%. Those levels are unlikely to be seen again in the foreseeable future though a modest increase is likely and desirable. I agree that the current price levels seem unsustainable but I can only see modest corrections being likely. But it will not be a catastrophic crash such as Mr Beckman forecast and I too would gladly take you up on the offer to buy your house at around half the going rate.