The problem is that Fahrenheit is a bit more convenient for describing the weather. Inches and feet are a bit more convenient for measuring human scale things and for being easily divisible by more numbers. And we’re used to the rest of it.
Unless someone comes along and forces it on you, for the average person, there’s not enough incentive to switch.
Unless someone comes along and forces it on you, for the average person, there’s not enough incentive to switch.