> To get a good night sleep (8 standard hours) you'd sleep for 3.33 metric hours.
Quote 2 seems to clearly contradict quote 1. 60 is great as it divides into 2,3,4 and 5. That's a feature not a bug
Because the rest of circles are so logical, π is such a nice round number.
Time is weird because its units are so necessarily arbitrary. We don't control (yet at least) the relationship between the rotation and revolution times of the planet, and both of those values are so very much essential
It's also interesting that you almost never will need to convert between time units. In normal life you will maybe convert minutes to hours and days or months (which aren't even of uniform length) into weeks and years. But scientists or engineers will always work in "metric" units of seconds and astronomers / archaeologists will always work in "metric" units of years
Compare this to mass and length/volume units, where a normal person will frequently need to traverse multiple orders of magnitude even just to bake a cake (grams to kilograms and milliliters to liters) and will have frequent experiences involving much higher orders (meters to kilometers every time they are following directions on their phones, or tons if they are loading a truck or buying a car)
>> Working with base-10 numbers is so much easier
I mean, every base is base 10.
Very few people I know actually sleep exactly 8 hours, so the recommendation will just adapt to another memorable number.
Also 1/4 of a day is 6 hours, another nice round number! 10/4 is 2.5 which is not as bad as 10/3 but still not a round number.