I live in a pretty hot climate, but it’s only really unbearable at times due to shoddy building and bad urban planning. Even then, summer can be difficult.
I can’t imagine what it’s like on the equator, especially in dense urban centres. What’s Mumbai, Bangkok, or Singapore like at the height of the wet season?! How do millions of people function day to day?
I’m from hot and have visited cold, and there are not enough clothes in the world to keep me warm if it’s cold enough. I just don’t seem to generate enough heat to warm them. I think we are just built differently - my husband is from colder area and when he works out he has to wait to cool down before showering, I have to wrap up so I don’t cool down too fast.