I think preference that just comes from familiarly. In practice you don't set your temperature in half increments in places with Celsius, it's just 20, 21, etc. Most HVACs do not set temperature that accurately enough in a room anyway for 0.5C adjustments to actually be useful.
If you come from a Celsius place and then move to the USA, you find it actually fairly annoying, because a bunch of useful numbers to remember is arbitrary as fuck. What is the freezing point again? 35, 37, 33? In Celsius it's 0 and very easy to remember. The freezing point is very useful, since you'll know if the rain will become snow if it's just under 0, or if ice will start forming on the road or not. Similarly what is the boiling point? 200, 205, 210, 212? vs. a nice round easy to understand 100. You can also think about how hot your water can be as a 'percentage of boiling', so 75 becomes 'hotness that is %75 the way to boiling'.
Vast majority of the world also knows that -17 (OF) is cold as fuck, and there is nothing special about that specific number too! You would also know that -16 and -18 are cold as fuck. Same with 38C (100F). 40C and 39C are also hot! And there are no unique properties about 0F and 100F, unlike 0C and 100C.
> Most HVACs do not set temperature that accurately enough in a room anyway for 0.5C adjustments to actually be useful.
The radiator thermostats I use have a 0.5 °C gradation. A 1 °C gradation would be too coarse as far as I’m concerned. That doesn’t mean that I’d prefer Fahrenheit, but 1° C is actually a quite significant step subjectively for environmental temperature.
If you come from a Celsius place and then move to the USA, you find it actually fairly annoying, because a bunch of useful numbers to remember is arbitrary as fuck. What is the freezing point again? 35, 37, 33? In Celsius it's 0 and very easy to remember. The freezing point is very useful, since you'll know if the rain will become snow if it's just under 0, or if ice will start forming on the road or not. Similarly what is the boiling point? 200, 205, 210, 212? vs. a nice round easy to understand 100. You can also think about how hot your water can be as a 'percentage of boiling', so 75 becomes 'hotness that is %75 the way to boiling'.
Vast majority of the world also knows that -17 (OF) is cold as fuck, and there is nothing special about that specific number too! You would also know that -16 and -18 are cold as fuck. Same with 38C (100F). 40C and 39C are also hot! And there are no unique properties about 0F and 100F, unlike 0C and 100C.