I know right? But my wife, who is American, remains steadfast I her support of Fahrenheit, and has a reasonable argument. So Celsius makes total sense when dealing with water. It’s thus the correct measure for cooking or doing anything with water as 0 is frozen and 100 is boiling. She agrees.
However she says Fahrenheit is the correct measure for humans. In this case for similar reasons because 0 to 100 Fahrenheit represents how cold to hit it is very reasonably. 0 Fahrenheit is basically as cold as you can safely go out in without special clothing beyond a jacket boots etc. 100 Fahrenheit is where it starts to get so hot that you again need to take special measures. It also apparently makes instinctive sense in that, say 75 Fahrenheit is like 7.5 out of 10 on how hot it is, which I guess is true.
So her position is C for cooking, F for people and given we willingly use other temperature scales, like Kelvin, where needed, I can go with that.