ORIGINAL: Cyber Me
Only three countries don't use the metric system: USA, Liberia, and Burma.
The metric system is so easy- all you have to do is multiply or divide by groups of ten- ie move decimal point right or left.
It has nothing to do w/ ease of use. It's growing up w/ a measurement that you instinctively know. I know exactly what an inch, a mile, a pound looks like/feels like . . . . a centimeter? a kilometer? a kilo? Not familiar. As above, it would have been easier if the metricists had started w/ a kilo equaling a pound or two or a meter equaling a yard.
As long as the differences only cost the occasional satellite or two I'm good with the current system.