A lot of engineering in the US (especially civil) still uses standard. Believe me, I would prefer metric because it makes calculations 100x easier, but there's a lot of legacy stuff out there.
Indeed. Although here in the UK, I find it frustrating that whilst we use metric for literally everything, we use MPH and miles for distance. It's illogical.
If I utter kilometers to anyone, they look at me funny.
I spent 5 years training myself to unlearn imperial in about 1990.