There is a difference between "home air conditioning", i.e. central air, and independent A/C units. I live in Boston and would be insane to go the summer withou

There is a difference between "home air conditioning", i.e. central air, and independent A/C units. I live in Boston and would be insane to go the summer without A/C, but a few portable units strategically placed work fine. Even still, there are countries far hotter than the United States which do not generally (or never) have A/C and they seem to survive just fine. Perhaps the definition of "necessity" is the argument here, but in a strict-leaning sense, A/C is hardly a necessity. None of the things on that list are, really.