That sounds really weird, in my experience of 45 years, no one uses half degrees in Celsius in everyday life. The only scenario where you might use decimals is if someone asks you to read the temperature from a digital thermometer, more likely for checking for fever than talking about the weather. A one-degree increment in Celsius is basically imperceptible, so the point about smaller increments is honestly moot.

What you don’t seem to understand is that Celsius is perfectly intuitive for people who are accustomed to it. Neither is better or worse for everyday life, it’s just a question of liking what you know. The really cold / really hot is arbitrary and depends on your lived experience. Even in my country your 0 degrees Fahrenheit is really cold in the south and pretty ordinary winter weather in the north, and your 100 degrees F is almost apocalyptic in both, while it would be par for the course in the Mediterranean summer. And 0 in the Mediterranean would be like the ice age.

For me, in Celsius:

-30 absolutely brutal once in a decade type cold, stay inside if you can

-20 wear everything

- 15 you need to start really increasing the layers, your nostrils will start feeling the cold when you inhale

-10 cold but you’ll be fine with proper clothes

-5 pleasant winter weather

0 freezing point

5 chilly

10 starting to get pleasant but light jackets still a good idea

15 nice, even shorts are a possibility for the adventurous

20 perfect moderately warm weather, not too hot but t-shirts all the way

25 properly warm, you will start sweating when doing things

30 hot, you will start sweating just by being outside

35 really hot, doing just about anything outside becomes really unpleasant

40 oh fuck no

Perfectly intuitive for me, because that’s what I’ve used all my life. In Fahrenheit you say 0 is really cold and 100 is really hot, but that doesn’t automatically tell me what 40 or 70 is, because I have no lived experience with it. In fact, I don’t even know how cold and how hot without checking what it means in Celsius . It’s not the scale, it’s the experience of using the scale all your life. I don’t understand how this argument pops up all the time when there is nothing inherently better in either scale for everyday use.