I presume fixed rate on real estate loans. You take 25 year mortgage, while having first 10 years fixed because its so cheap. You as a buyer hope desperately super low interest rates will still remain after those 10 years. If not, many people will be royally screwed since their monthly payments can easily double/triple.

Ie in Switzerland with their specific mortgages, it can easily go from USD 800 to USD 8000 per month if things go south, with drop in prices matching this development.