I'll second what earlier posters wrote about your loss being not the end of the world, although it hurt you quite a bit, particularly as you are still young and in the late 20s. But you will recover and will be fine.
If it is of any consolation, look at what is happening to my neighbor who is down the street from me. Having been in my house for 22 years, I am among the people who have been in this neighborhood the longest. My guess is about half of my neighbors are at least 50 year old, and empty nesters. We are happy where we are, hence do not care that much about the home price increase during the housing mania.
Indeed, there were very few houses in my neighborhood being changed hand during the last bubble. One of these rare transactions was the house I mentioned earlier. In 7/2005, public records show that this house changed hand at a price of greater than $500K. In the chart from Zillow as shown below, that transaction is marked with a $ sign. Look how the price estimate from Zillow continued to rise up after that, and then the dramatic decline from the top. At this point, the price has decreased by $200K from where my neighbor paid.
When the house was put on the market in 2005, all people in the neighborhood noticed and followed it. Remember that this is and has been a stable neighborhood with relatively little RE action. When the house got sold in a matter of weeks at a record price, we all shook our head in amazement.
Alas, last month, we saw a for-sale sign in the house front yard. It must be pretty sad for the homeowners, whom I still have not met. That house was the last bought in the neighborhood, and now is the first on the market.
As for me, my house, which is of a different floor plan but comparable in size, was paid off and is likely the place where I will die. So, how do I care about what Zillow says, except to satisfy my curiosity?