Celsius is the only SI unit I don’t like. I get that it’s more objective than Fahrenheit, but it has worse vibes and isn’t pleasant because it’s the worst of both worlds between the actual objectivity of Kelvin and the humanism of Fahrenheit.

the humanism of Fahrenheit.

How? Fahrenheit scale is totally incomprehensible. Celsius at least is using a rational point for 0 (=where water freezes) and same scale as Kelvin.

100F was originally set to roughly human body temperature. 0 was the freezing point of a brine mixture (water, salt, and ammonium) meant to be similar to sea water. It was used because the temperature would self-stabilize at a particular temperature, which was defined as 0 degrees.

That’s why its “humanistic,” the scale roughly includes the temperature range we can survive in, and provides d3cent granularity within that range. Metric based everything on pure water, which is pretty arbitrary also, as evidenced by both scales being redefined as more precise and repeatable means of defining measured units have become available.