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Like the other Imperial units, Fahrenheit is also one designed to be pragmatic -- it is scaled so that most temperatures are two digits. 100°F is approximately body temperature, and 0°F is a temperature about as low as one might expect the weather to naturally exhibit.

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0°F is quite a pointless border. Brine freezing? Why would you care about that event to make the scale based on it? Water freezing on the other hand is way more relevant for common matters. So lower border of the 0-100 scale was chosen quite poorly from pragmatic standpoint. And natural temperatures can go above 100°F, so the upper border wasn't chosen conveniently as well. It's not as uncomfortable as Kelvin, but it's still way less pragmatical than Celsius.

>relevant for common matters

Put it this way: 0 degrees is really cold for a human and 100 is really hot for a human. Water doesn't care if it's cold.

And in Siberia you sometimes encounter -70°C and in Dubai you measure 50°C (Both of which would be off the 0-100F scale).

Internationally Celsius make more sense.

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