We all subjectively are more used to our scales, and what numbers mean “very hot” and “very cold” are very varied based on your physiology, adaptation to the climate and the relative humidity.
For water, however, freezing pretty bang on zero (slight variation due to pressure), and you get enough days below zero water of different amounts will start freezing. Which I’d argue is an objective benefit over Fahrenheit for weather. Water freezing at zero is a useful distinction.
Negative? Freezing. Looks great on a graph with an X axis for time and y for temp. To get the equivalent nice graph in Fahrenheit gotta put a line at whatever weird number lines up with freezing.
A random city which I thought may be dipping below zero. That’s interesting, there’s a line at freezing, almost like that’s useful or something.
Putting a line that’s not zero, look at what Fahrenheit needs to do to mimic a fraction of our power!