We’re taught both metric and US customary units in school. I prefer metric for most things, to the point I have a metric-only tape measure among other things.
However, I’ll die on the hill that Fahrenheit is superior for ambient air temperature. 0 degrees to 100 degrees neatly encompasses the range of average surface temperatures seen throughout the year in the contiguous US.
I’m sure that’s mainly being used to one or the other? 0,5…0,75…1,5…2,5…4mm² are all quite distinct if you work with them a little. Imperials break my head though, can’t do all these fractions and conversions in my head.