What makes you think humans, an endothermic species, desires exactly 50% thermal energy? We enjoy the 70F region because we are warm blooded mammals.

"In International Sauna Championships the sauna was heated to 110°C" Yeah. And 2 people collapsed, 1 died from it. https://www.bbc.com/news/magazine-10912578 A 5-time champion who had excellent tolerance.

"Exactly. Because that is required to understand what the numbers mean (in celsius)"
Exactly, because fahrenheit doesn't require such a random set of arbitrary associations. Congratulations for understanding what I said while trying so hard to miss the point.

Look, you can argue all you want. The fact is that both systems have their applications. I don't believe you genuinely disagree with this statement. I think you're just here because you want to sling shit at people that are different than you. Nothing you say will make Celsius better at determining ambient temperature, nothing you say will make fahrenheit better for use in a lab. Get over it.