What a lot of people forget is the value obtained by living in your own home
Basically it mostly comes down to "your plan" and as long as you have not been stupid and over geared yourself and family
Day to day price changes are irrelevant if it is your intention to hold for twenty years + and do not have a financial necessity to sell
If it's an investment and it's a residential house regardless of what the economy is you can always rent it
My parents moved into their new home that my father built just before the great depression, they rented it and lived with family until times got better, but they still owned the house and the small mortgage was being paid by the rent, the house (since sold) is now valued at about 1.25 million