I regret to inform you that... Yes, you are doing some math other's don't. Except for the British, those people are beyond savior with their obnoxious mix of weird unit collections.

Yes, only places where it is mixed is the anglosaxony... try to open to the world.

I use pounds because I do archery, where my bow's power is measured with that unit, which I translate as 1/2 a kg. I don't care that it's inaccurate.

There are also inches (I think) for Tv and computer screens, which is shitty.

But no one else uses imperial.

I worked with croncrete blocks (prefabricated building elements) some years ago and I was all the time making fast calculations of sizes and weight and I cannot imagine making that in imperial (admittedly because I am not used, but in present case it would just have been massively impractical)