I’ll add to this that Fahrenheit is human-centric by design. Granted he didn’t get it quite right, but 100 degrees F was meant to be average human body temperat

I’ll add to this that Fahrenheit is human-centric by design. Granted he didn’t get it quite right, but 100 degrees F was meant to be average human body temperature. I’m personally comfortable with both. I prefer customary in the USA and metric in Europe. This is no more uncomfortable for me than speaking English in the USA and one of the other languages I know when in Europe. This might be because I’m native bilingual. I think and dream in both languages. Edit: Interestingly Americans are quite willing to use metric on a syncretic basis in a way somewhat analogous to how polytheistic religions incorporate foreign beliefs. For example Americans are quite comfortable with the liter as a beverage volume. And certain American subcultures actually use the gram as a subunit of the ounce for small masses.