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.
It depends on what I’m doing.
Baking: metric - grams on a food scale help me replicate recipes perfectly.
Cooking meat: standard - 140°F steak, 165 chicken
3D printing: metric always
Woodworking/household: standard - inches are just the standard for all the things. Wood, curtains, hardware, etc
Mechanical: ??/?? Depends on where it’s made! I hate having to switch wrenches or sockets due to the wrong standard.
This is the way