F has nothing to do with how a human feels. 0 f was literally just a very cold day that happened once. You’re just used to it, the same way people who use c are used to it and feel it very intuitively. A scale that actually was human would probably be logarithmic since we dont feel temperature linearly, and the 0 would be at 20c ~68 f since that is the temperature that’s most comfortable for people, with positive numbers being hot temperatures and negative numbers being cold