The half-duplex I moved into early last year is the first place I've ever lived with "central air" (whole-home) AC, everything previously has been window unit AC as needed. And having lived in NY, Maryland (well that was USNA and no AC in Bancroft Hall), SoCal, Hawaii, Alaska, Vermont, Florida, and now NH, some places AC was essential and some not at all - Hawaii being surprisingly one of the latter.
Winter thermostat is 68F (20C), and in this current place summer thermostat is 72F (22C) though I tend to be fairly tactical about both.
My cars have usually been equipped with AC, and I ride car AC pretty hard - don't like keeping windows open, especially since I'm usually driving 70mph-ish (120kph) plus. But moonroofs are great for expediting that initial get-in-the-hot-car cooldown. And with my latest car (2yrs now) I've become absolutely enamored of heated seats and steering wheel, it's now a luxury that I would very sorely miss in the winter.