Also where do you live.
Here we stay solid lower 90s typically in the summer, though like this week and some days upper 90's/100, 105 w/heat index.
We moved from renting (utilities included), kept house at 68*, which is perfect IMO.
now we moved and pay electric, so far keeping it 75* during the day while at work (dogs in the house), and 70* at night. Can't stand sleeping above 70.
I've read of some people keeping it 76-79* all the time. That's crazy to me. But depending on the bill, we shall see