Babylon through Ancient Greek influence too I think. Same with the reason why we have that weird 360 degrees thing and all the oddities with triangles and compasses and things. Just habits for thousands of years. I’m not a fan of the decimal system, honestly. Or binary even.
I’d rather a system go by 7ths. Every system gets mucked up by using 7s – especially decimal, but also systems of 6s and 12s too. 7 – the renegage