I’m 60 and was taught both – imperial in primary and metric in secondary. I even did my times tables up to 12 times
I am pretty much bilingual inmeasurements and can covert one to the other easily – but I think in imperial for some things – peoples height and weight – and metric in others – small measurements etc.
Imperial has poetry but metric is so much easier to use – but imperial measurements are easy to estimate as they are mainly based on things you can see and the single units are a more useful size.
inch = thumb length. 12 thumbs make a foot ( obvious) 3 feet make a yard ( fingertip to nose) 22 yards make a chain, 10 chains make a furlong, etc etc
An acre is a furlong by a chain and is the amount of land one peasant with one ox can plough in a day
I do get a bit confused with a rod a pole and a perch – I think they are the same but are something odd like 10 1/2 feet
And of course a mile is 63360 inches which is a really nice number. all handy and easy to remember and calculate. None of your divisible by 10 nonsense!