Good thing that Celcius is scaleable with Kelvin, which is scaleable with Pascal and meters. So you can easily calculate very precisely what temperature the water will boil at depending on your elevation.

Time is measured at a base of 12. Because it's far easier to create mechanical watches on a base of 12.

What is important is that it's a standardized measurement. We all have the same second.

I'm not sure if you're trying to make arguments for Fahrenheit or if you're just reciting your 7:th grade physics homework