And yet, many other countries have managed to transition to metric measurements without too much issue.

My parents were in their 30’s when Australia switched. They instinctively think in feet/inches, pounds for body weight (especially babies), but oddly miles hasn’t lasted.

I was educated in metric, but learned imperial lengths doing woodwork with my dad. I don’t have any intuition in pounds or miles, but feet (up to maybe 10) and inches are ok.

My son is purely metric. He can do the arithmetic, but has no intuitive sense in any imperial units.

So .. my anecdata is that it takes two generations to really switch.