Currently mine was at 79F (26.11C) which is hotter than most houses. The AC is a big part of the power bill for most homes, but the less it has to work the less power it will take from the grid. And I also assume it will make it last longer as that's less wear-and-tear. Honestly it was difficult to get used to it at first, but about two weeks later my body got used to it. Now the summer heat doesn't feel unbearable because I'm used to living in a hotter house, and my power bill is typically much lower than anybody else's as every degree is about 5% more in power.
What temperature do you keep your house?