We actually explored this a bit in our last post: https://www.openlistings.com/blog/sorry-sf-housing-prices-ar...

I agree that it can be misleading but it's the most common statistic used to describe the health of a real estate market. I think that's because it's rather robust to outliers. But, as we show in the post above, it's not robust to tightening / loosening of the price bands above and below median (e.g. median went down last month but the 1st quartile went up).