I'm in England and we use imperial and metric, I also have a house in
France where they have no comprehension of imperial lengths, weights
We co-exist with both; it's no big deal. My son is 20 years old and
has only been taught metric at school and Uni, but if you ask him how
tall and how much he weighs, he will tell you "6 3 and a half and 15
stone" (we don't use pounds to describe body weight).
Now the French being French, like to be different when it comes to
using metric. When I've been working on my place in France with a
French builder, he will use centimeters rather than millimeters. So a
measurement of 65 becomes 6.5 and when I ask, "is that meters" he says
"no it's centimeters". A 18mm thick sheet of ply becomes 1.8 thick and
9mm (3/8") plaster board is point 9.
This can become quite confusing when working together- fitting out a
kitchen or plaster boarding a room and on top of that I'm also
translating the language at the same time.
I'd rather use metric, imperial is illogical when measuring or
planning a structure. However, because of my age and education, I
still can't help thinking in feet and inches initially.
People will always disagree, that's just the way it is.