TBF we use metric wherever it’s needed as in science, engineering and the military. Imperial is more for everyday use and at least some of it, like feet vs meters, is more intuitive than metric since it’s basically the length of a grown man’s foot.
But again, wherever it actually matters, we do use metric.
This. I entirely understand that some people don't have that option, but it's worth reiterating that if you have a choice, you're best off not to have partitions at all.
I run Mint on an 8-year-old Mac desktop machine with no partitions and it's lightning-fast for everything I need it to do.
It's also worth mentioning that I have said desktop machine because my wife is a pro photographer and Apple and Adobe have colluded for decades to create a kind of "planned obsolescence" whereby professional photographers are ostensibly locked out of the current industry standard unless they run a very recent version of Photoshop that by design isn't compatible with hardware architecture that's more than about 5-years-old.