Hey... we had the metric system in our money 200 years ago...
When the heck will the british empire adopt a decimal monetary system?
Here's why I prefer standard over metric.
Engineering.
a base 10 measurement system is only evenly divisible by 2 and 5.
And dividing it by 3, or 6, or 9 results in infinite decimals...
A base 12 measure, however, can be evenly divided by 2, 3, 4, 6.
Further.... A circle has 360 degrees... that is a multiple of 12. ( the reason we have 24 hours in a day- also a multiple of 12)
Base 12 measure makes such things as gearing systems far easier to actually design and fabricate.
The question is not why 3 countries DON'T use the metric system... the question is why the idiots who sought to replace standard with something more sensible picked a base 10 system... ( cause they had 10 fingers? that's a good reason!)
They should have picked base 12.
Standard measure makes more visceral sense than the entirely arbitrary units of the metric system.
A yard is a man's stride... a foot, the length of his foot, an inch the width of his thumb... ( hence the term- rule of thumb)
A cup what you can hold in your cupped hand, an ounce is a sip....
And Fahrenheit makes far more sense than basing our temperature scale on the arbitrary freezing a boiling points of water... which we, as human beings, have no real relation to.
No human can tell the difference between 80 and 100 degrees celsius...
The Fahrenheit scale, however, set zero at the coldest day of the year and 100 at the hottest day of the year in the German town Fahrenheit lived in.
Therefore, the Fahrenheit scale is based upon HUMAN experience of temperature, rather than a lab experiment.
Man is the measure of all things... it makes sense that we use measures that relate to our experience.