Have you ever had an injection?
The precise dose you received wasn't measured in fractions of an ounce... It was in CCs, cubic centimeters.
Imperial makes no sense, example:
A mile is 5280 feet, odd but okay,
A foot is 12 inches, where did 12 come from?
But each inch is not divided by 12 but rather 2,4,8,16,32 and 64,
unless you're a machinist and each inch is divided by 10, 100 and 1000 but inches are still, 12ths of a foot.
P.S, Nasa used Metric for the Apollo moon landings, not Imperial... just sayin..