Plus there's the quality of life factor if the home you purchase is a better fit for your life... spending 10 years in a home you don't enjoy has a mental cost to it.
FWIW we borrowed $2m at 2.5% (thanks Bay Area prices!) Thanks to that low rate even if the house drops in value by 30-40% we still come out ahead on the mortgage cost assuming we stay in the house. And it is likely any money not spent on the down payment or paying it off early can be invested which thanks to the current market and interest rates can take a risk to get a good return (stocks are discounted right now) OR easily find safe investments that exceed the mortgage APR.
Plus we have a house that fits our family way better with a lot more space. We also have knock-on effects (installed Solar with a <5 year payback, something renters can't do).
It is hard to imagine a scenario where waiting out this downturn would have worked out better for us.