There are places in the US where it would cost money to set it to 65 and it's cheaper to set it to 77 (cough Phoenix cough). We typically leave the thermostat

There are places in the US where it would cost money to set it to 65 and it's cheaper to set it to 77 (cough Phoenix cough). We typically leave the thermostat at 79 or 80, and even then that's several hundred a month in AC.