"If I'm in a low-crime neighborhood on a normal temperature day, what is the risk that leaving my children in a car for 10 minutes with a window cracked and the doors locked will lead to my children being injured, kidnapped, or killed?"
The risk isn't nonzero (kids left in cars do, at some frequency, get injured, kidnapped, or killed) but it's probably far smaller than other risks people accept (such as driving the car around with the kids in it, or walking tired kids through the parking lot while also pushing a cart).
It would be great if we had such things, because it seems like people don't actually have good judgement for risks (understatement). My guess is huge parts of our day involve taking actions we think make us safer, but in fact do not.