To those saying wishing for a house price crash is wishing misery on others- I do agree, but equally house prices far outstripping earnings causes a lot of misery too.
I grew up in an area of the country which is very popular with second home owners. No-one who grew up there with me still lives in the area, as wages are low and house prices are very high, and there is not a lot of investment. They have all had to move away and have no prospect of returning. Don't you think that's a bit miserable for them? Equally, it is storing up long term problems, as who will look after the elderly people who will live in these areas in say 20 years? They've lost their sense of community and support networks, which can make things very hard for them.
Equally, there are a lot of families who rent, who would love to buy- they know that the landlord can ask them to leave in 2 months time at any time, and they may have to pay agent fees, and move to less than suitable accommodation if it's all they can find. Again, for these people bereavement, job loss etc, could all be a disaster.
That said, I don't think a fast crash would be good, but a bit of stagnation and a bit of deflation of property values with wages rising would surely be good for the majority of the population?