all caused by our collective greed! the need to own your own home (regardless of whether you could afford one!)
I don’t think this is quite fair.
There was a concerted effort by the monied classes to convince the general public that they could afford to buy their own homes without proper consideration of what the freeing up of credit would do to house prices.
And we are still being conned by politicians and bankers into believing that high house prices are due to a lack of supply, when in fact they have far more to do with too much credit.
What sent house prices into the stratosphere was banks providing 100% (+) mortgages, which led people to believe that it was OK to pay more for a house than you knew it was worth (on the grounds that it would be worth that at some point in the future).
It wasn’t just greed. It was a cynical exercise to get people into debt, where they could be milked for the rest of their lives.
But now we are all paying the price, because the (truly greedy) banks have created more debt than can be serviced by the economy, leading to defaults and the whole thing unravelling.
Some people might have been greedy/opportunist, but the people who should have known better, and allowed the situation to get out of hand were politicians and bankers.