>>508757498 (OP)Metric destroys your brain. There's nothing to think about, just easily worked out percentages.
Imperial, using fractions goes that step further. It keeps your brain ticking. Sometimes, when you put two of something together , you create a third effect, like electricity and magnetism create electromagnetism.
When brits started using decimal currency, thats when the rot set in, no more pound, shilling and pence, just pound and pence.
There is a fine point of balance between making things simple to understand and creating a breeding ground for stupidity.