While I agree with your sentiment, this one is a bad example.
I grew up with the metric system, as did the vast majority of the world. I have an intuition for "meter", "kilograms", "seconds", and so on.
I need to convert to cumbersome stuff like "miles", "inches" or "pounds" only when reading articles written by, you know, inhabitants of that strange, large country over there.
[1] The history is actually more complicated, but let's not get into that.
That doesn't seem very logical at all, that's entirely subjective. I'm fairly certain a top sprinter would easily be able to sprint much further than my (admittedly) unfit self before running out of breath.
The point isn't that the measurement is precise, the point is that it's useful. The unit has an intuitive and tangible meaning in the real world that let's people ballpark. This doesn't mean we should start doing precision work in furlongs but demanding that everyone switch away from measures that are still useful is silly. As long as the measurements are standardized using metric units who cares that you have a funny name for 201.168m?
Metric is great for general use simply because of it's multipliers: (...) 1G = 1,000M = 1,000,000K = 1,000,000,000 = 1,000,000,000,000m (...)
And also the simple way many units are related as well, like 1L of water having 1kg of mass (yes, with a certain temperature, pressure, yada yada yada)
You do care if you frequently have to convert between all those funny units.
Another example of a funny name is two-by-four, which - for some typically American reason - is understood not to actually be two inches by four inches...