It's not about you. It's about arresting mold development. If you leave it at 76 in the summer, it will not be cold enough to overcome the mold when it's 90 degrees outside in the daytime. What do people do without AC? They live with the windows and doors open 24/7 for circulation but, if you visit them In the Sommer, you will notice the air feels 'wet' and the interiors smell slightly from the damp, especially during tropical rain.