I appreciate everyones responses as I wrestle turning on the a/c as well. I didn't grow up with it and never gave it much thought until moving to my current home.
I live on a slab (house was built in 1963) and I'm in what is effectively a wetland. If I don't run the a/c to mitigate the humidity, it can become unbearable and we've had challenges with moisture and mildew.
Ceiling fans have made a difference and hopefully new windows soon.
I know in some humid areas folks will fire up the woodstove to dry the place out in July or August to keep moisture at bay.