A good example is height. It is much more precise and easy to use the metric system to say I'm 1'87 meters than saying 5 feet 11 inches, which mixes units. If you want to be more precise you could say 1'871 in metric and 5 feet 11 inches and something like "a sixteenth of an inch" (sorry I'm not being accurate, I didn't even look up). Or human weight? Don't get me started with stone and pounds. A stone is something more than 6kg and a pound is about 400g or 0'4kg. Good luck with that.
The imperial system might have an aura of romanticism for those of you raised on countries that still use it, but the metric system is one of the most elegant solutions civilisation has invented. It works in every case better than any other system and it is easy to teach to kids. 10/10 would measure again ;)
I guess, after all there's a reason the international science community adopted the metric system.
There are a few big exceptions - physics with eV, astronomy with just about a whole new imperial system, warts and all, and the most brazen is chemists who've managed to squeeze the mole in to the SI system despite its being entirely redundant and depending on two (2!) different mass units - the kg and the amu. So I'd say some big subgroups of the science community really haven't adopted the metric system.
THIS. as for curiosity, why not, but we can say something similar about nordic runes or egyptian writings. But this is more of an ego challenge, when one should accept that what they grown up with is inferior (sorry to our english-native friends, but imperial system is really, really archaic & inferior).
And yes, we in europe regularly measure in metres+centimetres, we use decimetres quite regularly, and it feels natural having bigger part divided into 10 or 100, or 1000 subparts. On the other hand, feets are nightmare (30,5cm), and 6"2 - what the heck is that 2? is it 2/10 of the foot? or 2 inches which are TOTALLY different measure compared to feet without any easy translation? mess...
It may seem like an extra pain in the neck but I think it just has to do with a personal aesthetic scale, one that can grow on you quickly.
I like to divide and multiply by 2 and 3 and 4, it keeps the numbers around me simple and. And doing that with inches, you have 12, 24, 48. Other things scale-wise to people ends up being kind of nice.
Door widths at 30" Sheets of plywood and drywall at 4'x 8'. Heavy to handle but cover a lot of area. These template defaults just kind of become aesthetically pleasing to work with after I'd say a short time, one can appreciate the units of measurements and how we manufacture to suit them and ourselves best.
Kind of the same thing in architecture, when they talk about human scale vs more modernist epic architecture which lacks human scale (Brasilia, for example)