It's a system designed to correlate to typical ambient temperatures, which it does. Just as Celsius is designed to correlate to water temperatures, and Kelvin is designed to correlate to absolute temperatures. Hence the top comment: Fahrenheit is how humans feel (range of climate temperatures humans live in), Celsius is how water feels (range of temperatures for liquid water), Kelvin is how the universe feels (range of all temperatures).

Denying the nature of the general scale because you don't personally use the whole thing is as silly as calling Celsius pointless because you don't personally use ice cubes.