Here in the US, the english system is up to date and is working just fine.
It's so simple, even little kids here understand it.
Nobody likes W's "fuzzy math"
Sure, Fahrenheit works. We could also decide our temperatures by dividing the difference between frozen iron and molten iron. Or maybe the increments between the corona of the sun and interstellar space. Or just randomly start somewhere and add random numbers until we decided we had enough, like the English system.
I forgot what 0 F is supposed to mean but 100 F isn't even what it is supposed to mean (body temp) so this is a no brainer. ice-water-vapor is useful to a lot of people.
Various countries use various systems for length and weight (ever heard of the British "stone"? ) but Fahrenheit is only used in the US and a few places in the Caribbean (Jamaica, Bahamas, Belize, the Cayman islands).
Kelvin is the most logical: 0 degrees Kelvin is the complete absence of thermal energy.
Under the Kelvin system, the temperature in NJ yesterday was 308 degrees.
Very useful to scientists, not to ordinary people who would then have to work with three digit numbers all the time. Celsius also has the benefit of making temps below freezing negative, negative means freezing, ice, snow. Positive means it melts.
Here in Norway we talk about cold-degrees and warm-degrees (- or +), very useful in a country where freezing may occur, at least during the night, during the bulk of the year.
Here in northern California, we have what I would consider to be hot summer's. Over 100 degrees most often in the summer, or at least the high 90's.
So with that temp, I like my home around 77, 78 degrees. Thankfully, my home is located in a good part of town, where we receive what is called the Delta Breeze in the late evening. And it helps to cool the area off. I would much rather have my windows open and the fresh air cruise through my home, then everything buttoned up and the AC on. There are times, when the breeze is nowhere to be found, and I am forced to leave the AC on at night.
Like this last 4-5 days, the AC has kept us cool at night.
But Summer is almost over. Just another 6-8 weeks of high temps, then it will fall, like the leaves getting ready for change and winter. See, Winter is Coming.