Counter opinion: no one who grew up in a country with the metric system would know how to understand "I weigh 14 stones". What stones? Small ones? Big ones? Who decides if it's a big one or a small one? Also, how would I know how much a stone weighs?

It's just silly. It has no more bearing on reality than a kg does.

If you grow up in a country that uses metric basically exclusively, it’s not. I literally cannot visualise 10 feet but if you say three metres I instantly have a feel for how long that is (I even Googled the conversion because I couldn’t be bothered working it out). I wouldn’t have any idea what 100 degrees Fahrenheit felt like if I didn’t know it’s about 38 degrees C. And so on…

This is not an unpopular opinion. Millions of anglophones seem to be unable to grasp or accept that metric measures make intuitive sense to people who use them.

That’s just familiriaty bias

I'll grant that words like inches, pounds and miles have more literary gravitas to them than centimetres, kilograms or kilometers, and it would be a shame to lose those former words completely, but arguing they make more "sense" is really pushing it. I literally have no "sense" of what a "stone" weighs, how deep a "fathom" or a "league" is, how much area a "rood" covers, or how much liquid makes up a fluid ounce, and I doubt I ever will. And they're just some of the more common units!

English units like my 2 litre kettle which I use to fill my 300ml cup with tea? Yes they do make sense.