France doesn’t use it either
Except for commercial buildings no one had AC in Colorado when I was growing up. True in California if you lived in the Bay Area. Didn’t need it very often so why bother
We put AC in our house on the peninsula when my wife was pregnant with our second child. We use it 10 to 20 days a year and it’s is wonderful. A nice luxury to have. Stucco houses are brutal...they absorb all the mid-day and afternoon heat on the south and west sides, then radiate it into the interior in the evening.
There are a lot of countries and regions of the world that up until now did not NEED A/C units.
It would seem that things are indeed heating up so...Korea, France, Eastern Europe, Greece, etc. are countries that are rapidly trying to catch up with cooled air in their houses and Hotels.
The Japanese, for example have A/C units but intentionally prefer to sweat and therefore not harming the environment...