There are plenty of walkable cities in hot climates all over the world. Look at South America or Asia. After wearing appropriate clothing--loose open-weave line

There are plenty of walkable cities in hot climates all over the world. Look at South America or Asia. After wearing appropriate clothing--loose open-weave linen, shorts, etc., not dense cotton t-shirts and tight baseball caps--and spending significant time outside, one can grow accustomed to the heat. In many countries in Central and South American it's common for men to wear pants and even suits in 80+ weather and nobody's complaining--because they've grown accustomed to the heat after being outside all day. Go to Hong Kong or Singapore or Japan in the summer where it's stifling outdoors and men are wearing full suits as they walk about their day. I'm not saying we have to wear full suits in Florida--I'm just saying that one grows accustomed to one's environment. Americans feel they deserve to wear in Florida whatever they were wearing in Chicago; and then since most of their day is spent transitioning from one from freezing-cold refrigerated space to another to freezing-cold refrigerated space, with only brief flashes outdoors as they walk from their car to their shopping mall, they never get the chance to accustom themselves to their environment. It's a self-fulfilling prophecy.