This isn't kilometers, area, volume, distant measurement. It's temperature. What that 100 is based on is random as fuck, and having the temperature of one elements boiling point at sea level divisible by 10 doesn't really help anything. There is a 100 degree point in Farenhenheit too, you could simply use that for...well whatever reason you need ten to go in evenly.
My guy, I'm not arguing whether the boiling temperature of water is a random point (because it isn't random in any way, and I'm not interested in arguing that). I'm arguing one simple thing: assigning something on a scale to 100 is much less random than assigning it to 212.
You have no understanding of randomness if you think that 100 is equally random as 212 in our decimal system. No, not every number is equally random, no matter how often you repeat it.
I understand you have a fetish for numbers that are multiples of ten, but that doesn't make them special. Picking a number out of a hat is as likely to be a 9 as a 100.
So we use fractions of 100 instead of fractions of 10 because base 60 was too useful? How does that make any sense? The question wasn't why we use base 100 instead of base 60.