Me, my wife, my child all have differently sized feet and hands.

Tbh, as an european I kinda absorbed a lot of imperial by just living on the anglophone internet, and honestly have nothing good to say about it.

I can intuitively guesstimate what a mile, yard, foot and inch are in metric, and I do, because it's useful in my particular corner of the Internet, not because it's a good system.

I have no idea what a gallon, stone, lbs or oz are. Volume of itself is kinda unintuitive, same with weight. Can't be bothered.