Water Shut Off
While water shouldn’t be the cause of an explosion or fire, it can cause a lot of damage to a home. I'm not sure of the statistics, and there probably aren't any accurate. Knowing where the water shut off can save or reduce the amount of water damage in your home, at least water coming from the home's water supply.
Floods are the most common and costly natural hazard (Flood After Fire), but there isn't a shut-off valve to help prevent flooding from external water sources.
However, depending on what insurance site you reference, water damage (often from leaking pipes inside the home) is 7 to 10 times more likely than fire. In August 2019, Chubb Insurance in Australia stated that internal water damage claims were up 72% in the last 5 years (Chubb reveals its water damage claims are more common and costly than fire and burglary)