[Kalium]

A national average is about two months, from what I can find, depending greatly on where you are and what you're selling. That standard deviation can be quite a pain. It's certainly challenging to plan around an unknown and potentially unbounded number of months. The ability to make that into a known number might thus be valuable to some people in some situations.

You're absolutely right, of course. There's no shortage of stories about markets moving fast! That said, it's been my personal experience that people don't generally share their stories about a house or condo moving slow. Perhaps complaints and stories might not be an ideal guide to reality in this instance?