You know that if you started off with metric, metric would feel intuitive too right? (Aza Raskin has a video where he basically says that what most people call intuitive they really mean "familiar".)
Right. I grew up with the metric system. (Just like anyone else outside Britain or their old colonies.) To me gallons and feet are not intuitive. But a meter and a liter and a kg is familiar, so I can roughly tell how much that is without a measuring instrument.
The fact that a foot is supposed to be the length as a foot doesn't seem like any useful advantage to me. My foot is not precisely 30.48 cm anyway.
Some imperial units are still in use outside of the British world. Inches for TVs and computer monitors and car wheels. Feet is used for boat lengths although meters is also used sometimes. Knots and nautical miles in sailing. Feet is also used in aviation.
