And where I live it's 110F+ for three months of the year. No one sane is biking or walking anywhere as it's too dangerous. Not everyone lives in some temperate small European city.
First off, you're exaggerating. There is no place on earth that averages 40C for 3 months.
Second,I live in Tokyo, where the summer has been miserable with average temperatures of 32C, with regular highs of 36+ with 80% humidity. And yet I walked and biked everywhere and was just fine, and that's true for most of the 40M people that live here as well.
Third, it sounds like you live in a place that's not suitable for humans, you should probably move instead of making the planet even hotter for everyone else by living in your steel boxes with AC.
I didn't say average, and the highs are higher for many days. It sounds like you've never been in extreme heat, there's a huge difference between 89F and 110+F. More people are moving here than are leaving.
Second,I live in Tokyo, where the summer has been miserable with average temperatures of 32C, with regular highs of 36+ with 80% humidity. And yet I walked and biked everywhere and was just fine, and that's true for most of the 40M people that live here as well.
Third, it sounds like you live in a place that's not suitable for humans, you should probably move instead of making the planet even hotter for everyone else by living in your steel boxes with AC.