how is fahrenheit 1-100 for humans? 100 i can sorta see, most people have a body temp around ~37°C (though still, there's about 1°C of variance..), but 0°F is very very cold and not exactly a temperature that many people encounter on a daily basis.

i certainly cannot think of anything more relevant to humans than the freezing and boiling points of water, most people encounter them often and it's very easy to see when water starts freezing or boiling.
If you see ice outside you know the temp is below 0°C, when the water in your pot is boiling you know it's at 100°C, it's super fucking easy.

But the reference points for fahrenheit cannot intuitively be measured, 0°F has no obvious indicator, and 100°F can at best be vaguely inferred based on the air temps we can do work in, and even then you can really only reliably infer something like 30°C because that's generally when humans start feeling like it's too warm to do significant amounts of labour.