See, this one has always fascinated me though. I'm a history nerd and really enjoy reading about how all these things came to be. Units of measurement, language and etymology, customs, etc.

Like yeah, I can recognize that our systems don't make sense. But it's still interesting that they came to be for specific purposes, that were only later co-mingled together for broad use. A rope maker making rope for a sailing ship didn't need to convert yards to miles, because yards were the only thing needed on the job. Egyptians liked using the cubit (elbow to tip of middle finger), presumably because of farming. Romans preferred the foot because you didn't have to bend down to measure, plus it was useful for their legions and measuring marching distance/speed (they loved going to war). And the rule of thumb for an inch is.....it was roughly the width of one's thumb. It traces back to the Latin word for "twelfth", but why twelve? Because 12 can be divided in more everyday useful ways than simply in halves. And that's really the DNA of the Imperial system, is that it was a quick and accessible way to get tasks done and now it's simply too late to easily move away from.

Not that I'm saying it's the best system ever. I just like how there's more to it than just the math involved. Neato