Metric system

This is the official version

The fact that your argument ignores the sizes of objects in your life makes me think you've never built furniture or really thought the sizes of the things you use everyday. I'm going to argue from a woodworkers prospective on why imperial units are useful. This is where a lot imperial measuring units come from so lets at least look at them in that context.

I'm going to argue that 12 inches in a foot makes the imperial system more useful in some ways. Have you ever wondered why the glorious base 10 isn't used for time. It's because 10 sucks for dividing into chunks of things. Where as 12 can be split into halves, quarters and thirds easily. 10 is useful for scaling and math but for it's easier to use 12 for splitting things up on the fly. Being able to cut the foot in many ways is more useful for practical reasons just like time is.

I've been doing woodworking for a while now and the foot is useful to decribe the width of book shelves, tv stands. The yard is useful for the size of a bench seat, table widths and counter tops. These are practical standards and more useful than meters in that context. The m is too big for these things and the cm too small. While you can use metric units for these measurements and many countries do they are inconvenient for practical building reasons for the same reasons imperial units are for math reasons.

If all of math switched to a base 12 system from base 10. We could have all of the benefits of the metric system's scalability and the imperial system's divisibility and that would be the best solution I think.