It makes more sense in terms of our perception. But from a science perspective ~~Klevin~~ Kelvin makes more sense since you can't go lower than 0 K and negative temperature doesn't really make sense, since it'd mean something like negative energy.

C++ is better ofc /s

I wouldn’t say it corresponds between negative and positive. -20 is already a lot more dangerous than 40.

I’ve always thought it’s like: 0- is freezing, 10 is cold, 20 is ok, 30 is hot, 40+ is hell

F has that too. Below 0, f it's cold. Above 100, f it's hot. 0-25 winter sports baby, 25-50 bleh it's wet and nasty, 50-75 chefs kiss, 75-100 let's hit the beach.

VERY generally speaking, 20s are warm, 30s are hot. Humidity changes this a lot. And yes, personal sensitivity to heat plays a role. I live in a dry climate, and I feel rather comfortable until we're close to 30 ºC. I remember reading something like the ideal room temperature for humans was around 20-22 ºC.

For those using F, this is, more or less, the scale of C:

Below 0: freezing (0 ºC being the freezing point of water, duh!)
0 to 10: cold (don't go out without a coat)
10s: cool (a sweatshirt or light coat may do)
20s: warm
30s: hot
40s: uncomfortably hot (stay in the shade and hydrate)
50s: you're dead (or you wish you were. Unsafe for humans)

That's not a lot IMHO. It's quite warm, but not hot.