I am one of the few people in my condo apartment complex who actually opens my windows in nice spring and fall weather! Everyone else keeps their HVAC system going all the time, either with the heat or the A/C set. I like and prefer fresh air and whenever it's possible, enjoy having my windows and sliding glass door open.
Even when I do have the A/C on, the thermostat is set so that the A/C doesn't kick in until probably it is warmer in here than most people would choose. I really dislike it when I go to a store, restaurant or even someone else's home and the A/C is blasting away, freezing cold. I always take a sweater with me when going somewhere in the summer.
I hate walking indoors from the heat into what feels like a deep-freeze environment. Then when I later step out of that same overly chilled place, the natural climate conditions (heat and humidity) of a typical DC-area summer day hit me full-blast like stepping into a furnace. Actually, for a minute or two, though, that warmth does feel good after the extreme chilliness of the store or restaurant. Still, going from one to the other extreme within a short time period probably isn't great for the human body!