There is a very sweet irony on that 'backwards and broken' statement. Especially from any country in the UN.
And Germany.
But that's political bullshit that really shouldn't be talked about here.
Why does metric make sense then? Why use metric over imperial? The thing is, that just because you learned one way does not really make the other bad.
I can't understand metric. That's a fact. A very important fact.
Just like how Rukia mostly can't understand imperial. Neither is bad. Just different.
Doesn't mean I won't think metric sucks though.
I'm from Canada, but that aside.
Metric makes sense because it has internal consistency. Every conversion works out by base tens, which means that the system aligns with our base ten numbers as well.
You start with the basic unit, the meter, then backwards and forwards from there.
1 metre = 100 centimetres OR 1000 millimetres
Also help that the word 'centimetre' translates literally to 'hundredth of a meter' and 'millimetre' to 'thousandth of a meter' making things extra-easy.
Then in the other direction, 1 kilometre = 1000 meters. Also helped by the fact that kilo refers to a thousand, hence making it again another easy literal translation.
Not only that, but the prefixes (milli-, centi-, kilo-, etc.) are consistent across all forms of metric measurement.
Weight? A milligram is one thousandth of a gram, or a kilogram is one thousand grams.
Volume? A millilitre is a thousandth of a litre and so on and so forth.
Imperial system was basically originally designed with whatever happened to be lying around to measure stuff with, and originally had no fixed standard. The metric system on the other hand was designed from the ground up for simplicity and consistency and is as a result both much easier to learn and much more useful in the long run. Feet and yards and miles make sense relative to each other but not to a base ten number system, meaning that trying to break them down into decimals for granularity of any kind is almost universally much more difficult than it would be to try and break down a metric measurement in the same way.
EDIT: Not saying that imperial isn't useful. I'm just saying that it's utility is far lesser compared to metric, and one cannot reasonably argue s better in any way.
Keep using it if you want, but at least understand and acknowledge that it is inferior when you do so.