Metric-Maxis roam the earth. People who believe the metric system should be universal.
The metric system is a tool, and should be used when it’s the most useful. Fahrenheit is a better system for everyday life. 0F is around the lowest temperature in a person’s experience and 100F is around the highest. 0-100 is an intuitive scale, everyone has a feel for where any data point is on that scale. That same range is -18 to 38 in Celsius. Which is more intuitive?
When I was a kid, I came up with a metric for time. It did not work and it’s obvious why. There are at least two fundamental time cycles. 24 hour days and 365 day years. One is not a factor of 10 from the other, so any time metric system could not involve both cycles. The metric system is not universally useful and should only be used when it is.