system
Given the following post, respond as if you're commenting on Reddit:
human
CMV: We would be better off if our counting system was on base 12 instead of base 10

Basically, there would be 2 more numbers between 9 and 10. "10" would represent 2x6 of something. 

Not arguing that we should change to this system now, it's way past that point. But there are a lot of basic math equations that would be easier if we had a base of 12. 

* 12 has 6 ways to divide (1, 2, 3, 4, 6 and 12) instead 10's 4 (1, 2, 5 and 10). So instead of 1/3 being equal to 0.3333, it would be 0.4. A base of 12 is just "nicer" to work with in a lot of ways. 

The only slight upside I can give to a base of 10 is that we have 10 fingers. This could make it easier for young kids to learn to count. My rebuttle to this is that: a) you wouldn't be changing the max number of things you can count on both hands, just when it goes into the next digit. b) if it's that much of an issue that "we need to be able to go into the next digit line on 2 hands," well then each digit on a finger (excluding thumb) has 3 sections. 4 fingers on each hand gives us the ability to count to 24 (what would be 20). We'd just need a way to indicate which section to stop counting at. 

Again, not advocating a massive change in society as it totally wouldn't be worth the pain. But if we had a time machine and could go back and change how it started, I think it'd be for the better.
gpt
The Babylonians used a base 60 system, which I'd argue is even better than base 12. It's thanks to them that we have 60 seconds to a minute and 60 minutes to an hour.

With base 60, you can easily divide by 2, 3, 4, 5, 6, 10, 12, 15, 20, and 30.

Why don't we change?

Same reason why you typed this on a qwerty keyboard when dvorak is proven to be superior.